diff --git a/.dokuwikigen b/.dokuwikigen
index 7c79edd..4f81303 100644
--- a/.dokuwikigen
+++ b/.dokuwikigen
@@ -3,10 +3,10 @@
 gendefault
 
 etitle "Documentation de ulib"
-array_from_lines ulibnames "$(list_files ulib)"
+array_from_lines ulibnames "$(list_files lib/ulib)"
 # faire les pages
 for ulibname in "${ulibnames[@]}"; do
-    awkrun <"ulib/$ulibname" 'BEGIN {
+    awkrun <"lib/ulib/$ulibname" 'BEGIN {
   in_func = 0
   dump_doc = 0
   dumped_doc = 0
diff --git a/.udir b/.udir
index 67946da..a5c7d43 100644
--- a/.udir
+++ b/.udir
@@ -6,7 +6,7 @@ udir_note=""
 udir_types=("uinst")
 uinc=true
 uinc_options=()
-uinc_args=(ucrontab reptyr.cgo ulib/ulibsh ulib/support/install-pubkeys.sh lib/uinst/system_caps.legacy)
+uinc_args=(ucrontab reptyr.cgo lib/ulib/ulibsh lib/ulib/support/install-pubkeys.sh lib/uinst/system_caps.legacy)
 
 # Faut-il désinstaller les fichiers de configuration de utools?
 uninst_utools=
diff --git a/EnsureVM b/EnsureVM
index 9833dd8..f54042f 100755
--- a/EnsureVM
+++ b/EnsureVM
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS service
 
 function display_help() {
     uecho "$scriptname: s'assurer que les services sont lancés pour un type de virtualisation
@@ -10,10 +12,6 @@ USAGE
 Les types supportés sont virtualbox et kvm (par défaut)"
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS service ||
-exit 1
-
 function ensure_kvm() {
     # S'assurer que les modules VirtualBox sont déchargés et que les modules kvm
     # sont chargés, et que le service libvirt-bin est démarré
diff --git a/SKvm b/SKvm
index 060ab8f..23746c1 100755
--- a/SKvm
+++ b/SKvm
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS virsh
 
 function display_help() {
     uecho "$scriptname: lancer une machine virtuelle kvm
@@ -34,10 +36,6 @@ OPTIONS
         Afficher le gestionnaire de machines virtuelle"
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS virsh ||
-exit 1
-
 function build_arrays() {
     # Construire les listes avms, rvms, svms
     # rvms: les vms qui tournent
diff --git a/SVirtualBox b/SVirtualBox
index ff0e61b..f9ffafe 100755
--- a/SVirtualBox
+++ b/SVirtualBox
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: lancer une machine virtuelle VirtualBox
@@ -23,10 +25,6 @@ OPTIONS
     -g  Afficher le gestionnaire de machines virtuelle"
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-
 function build_arrays() {
     # Construire les listes avms, rvms, svms
     # rvms: les vms qui tournent
diff --git a/_root b/_root
index 823ece3..088a355 100755
--- a/_root
+++ b/_root
@@ -1,15 +1,13 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire base
 
 function display_help() {
     uecho "$scriptname: devenir l'utilisateur root, avec 'sudo' si possible, ou 'su' si
 'sudo' n'est pas installé"
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire base ||
-exit 1
-
 parse_opts "${PRETTYOPTS[@]}" \
     --help '$exit_with display_help' \
     @ args -- "$@" && set -- "${args[@]}" || die "$args"
diff --git a/authftp b/authftp
index 6e7bb5b..40c3cda 100755
--- a/authftp
+++ b/authftp
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: Se connecter sur un site FTP authentifié
@@ -30,10 +32,6 @@ façon dont le proxy ftp est configuré, il n'est pas possible de se connecter
 avec un mot de passe qui contient le caractère @"
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-
 AUTHFTP_PROXY_DISABLED=1 # par défaut, ne pas utiliser le proxy
 set_defaults proxy
 set_defaults authftp
diff --git a/bashrc b/bashrc
index c8dd759..a98d548 100644
--- a/bashrc
+++ b/bashrc
@@ -1,6 +1,6 @@
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
 
 function uprovide() { :; }
-source @@dest@@/ulib/uenv || return
+source @@dest@@/lib/ulib/uenv || return
 __uenv_source_dirs @@dest@@/bashrc.d "$HOME/etc/bashrc.d"
 __uenv_cleanup
diff --git a/caturl b/caturl
index 1fa585e..3bcb50d 100755
--- a/caturl
+++ b/caturl
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: Afficher une url
@@ -8,10 +10,6 @@ USAGE
     $scriptname <file.url|file.desktop|URL>"
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-
 parse_opts "${PRETTYOPTS[@]}" \
     --help '$exit_with display_help' \
     @ args -- "$@" && set -- "${args[@]}" || die "$args"
diff --git a/cssh b/cssh
index 28d6438..2a26417 100755
--- a/cssh
+++ b/cssh
@@ -1,6 +1,6 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
-source "$(dirname "$0")/ulib/ulib" || exit 1
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
 urequire DEFAULTS
 
 function display_help() {
diff --git a/doc/update.sh b/doc/update.sh
index 8d8a958..f8ae7a6 100755
--- a/doc/update.sh
+++ b/doc/update.sh
@@ -1,13 +1,9 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
-
-source "$(dirname "$0")/../ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-OENC="$UTF8"
+source "$(dirname "$0")/../lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
-    local OENC="$UTF8"
     uecho "$scriptname: Mettre à jour la documentation pour les outils de nutools
 
 USAGE
@@ -93,7 +89,7 @@ $("$cmd" --help)
 fi
 
 if [ -n "$ulib" ]; then
-    array_from_lines ulibnames "$(list_files ../ulib)"
+    array_from_lines ulibnames "$(list_files ../lib/ulib)"
     # faire l'entête
     dump_content ulib.twp "$oldcontent"
     echo "
@@ -104,7 +100,7 @@ if [ -n "$ulib" ]; then
     write_twpage "$oldcontent" ulib "$newcontent" ulib.twp
     # faire les pages
     for ulibname in "${ulibnames[@]}"; do
-        ulib="../ulib/$ulibname"
+        ulib="../lib/ulib/$ulibname"
         twpage="ulib_$ulibname.twp"
         title="ulib/$ulibname"
         dump_content "$twpage" "$oldcontent"
diff --git a/dokuwiki b/dokuwiki
index 94ef103..bedf94d 100755
--- a/dokuwiki
+++ b/dokuwiki
@@ -43,9 +43,8 @@ if [ "$#" -eq 1 -a "$1" == --nutools-makelinks ]; then
     exit 0
 fi
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 # Traduire le nom du script
 for script_alias in "${SCRIPT_ALIASES[@]}"; do
diff --git a/fconv b/fconv
index afede28..82f832b 100755
--- a/fconv
+++ b/fconv
@@ -30,9 +30,8 @@ if [ "$#" -eq 1 -a "$1" == --nutools-makelinks ]; then
     exit 0
 fi
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 from=detect
 case "${scriptname#fconv2}" in
diff --git a/fnconv b/fnconv
index ce0a593..da6f157 100755
--- a/fnconv
+++ b/fnconv
@@ -28,9 +28,8 @@ if [ "$#" -eq 1 -a "$1" == --nutools-makelinks ]; then
     exit 0
 fi
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 from=detect
 case "${scriptname#fnconv2}" in
diff --git a/geturl b/geturl
index ddb3c25..de561cd 100755
--- a/geturl
+++ b/geturl
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: Télécharger un fichier avec wget ou curl
@@ -8,10 +10,6 @@ USAGE
     $scriptname <file.url|file.desktop|URL> [wget options]"
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-
 parse_opts + "${PRETTYOPTS[@]}" \
     --help '$exit_with display_help' \
     @ args -- "$@" && set -- "${args[@]}" || die "$args"
diff --git a/lib/bashrc.d/bash_completion.nutools b/lib/bashrc.d/bash_completion.nutools
index 35ab546..3f92b61 100644
--- a/lib/bashrc.d/bash_completion.nutools
+++ b/lib/bashrc.d/bash_completion.nutools
@@ -7,7 +7,7 @@ if [ -n "$UTOOLS_BASH_COMPLETION" ]; then
         6*|squeeze*)
             # le code suivant n'est compatible qu'avec debian squeeze
             if [ -z "$BASH_COMPLETION" -a "${BASH_VERSINFO[0]}" -ge 4 ]; then
-                source "@@dest@@/ulib/bash_completion"
+                source "@@dest@@/lib/ulib/bash_completion"
             fi
             if [ -n "$BASH_COMPLETION" ]; then
                 if [ -n "$BASH_COMPLETION_DIR" -a -f "$BASH_COMPLETION_DIR/ssh" ]; then
diff --git a/lib/init.d/install-kvm-stop-all b/lib/init.d/install-kvm-stop-all
index ddd3227..31ef516 100755
--- a/lib/init.d/install-kvm-stop-all
+++ b/lib/init.d/install-kvm-stop-all
@@ -1,7 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
-
-. "$(dirname "$0")/../../ulib/ulib" && urequire DEFAULTS || exit 1
+. "$(dirname "$0")/../../lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 check_sysinfos -s linux -d debian || exit 0
 run_as_root "$@"
diff --git a/lib/init.d/install-openvz-fix-etchosts b/lib/init.d/install-openvz-fix-etchosts
index 9787000..f89fdbb 100755
--- a/lib/init.d/install-openvz-fix-etchosts
+++ b/lib/init.d/install-openvz-fix-etchosts
@@ -1,7 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
-
-. "$(dirname "$0")/../../ulib/ulib" && urequire DEFAULTS || exit 1
+. "$(dirname "$0")/../../lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 check_sysinfos -s linux -d debian || exit 0
 run_as_root "$@"
diff --git a/lib/mkselfinst b/lib/mkselfinst
index 4c0358f..f03dd3a 100755
--- a/lib/mkselfinst
+++ b/lib/mkselfinst
@@ -1,11 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
-
-source "$(dirname "$0")/../ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-OENC="$UTF8"
-MAKESELFDIR="$scriptdir/makeself-2.1.5"
+source "$(dirname "$0")/../lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: Créer une archive auto-extractible qui installe nutools
@@ -22,6 +18,8 @@ OPTIONS
         s'auto-détruit après utilisation."
 }
 
+MAKESELFDIR="$scriptdir/makeself-2.1.5"
+
 mode=755
 parse_opts "${PRETTYOPTS[@]}" \
     --help '$exit_with display_help' \
diff --git a/lib/profile.d/nutools b/lib/profile.d/nutools
index 62bebb4..d32d2d4 100644
--- a/lib/profile.d/nutools
+++ b/lib/profile.d/nutools
@@ -6,7 +6,7 @@
 # gourmandes en resources.
 # Au 18/06/2013, cela ne concerne que les scripts/fichiers suivants:
 #   - lib/profile.d/bash_prompt
-#   - ulib/vcs {git_commit}
+#   - lib/ulib/vcs {git_commit}
 : "${UTOOLS_AUTO:=1}" "${UTOOLS_NOPUSH:=}"
 export UTOOLS_AUTO UTOOLS_NOPUSH
 
diff --git a/lib/pywrapper b/lib/pywrapper
index bf28274..43b4c2e 100755
--- a/lib/pywrapper
+++ b/lib/pywrapper
@@ -17,5 +17,5 @@ else
     nutoolsdir="$(cd "$(dirname "$0")"; pwd)"    
 fi
 
-source "$nutoolsdir/ulib/nutools/pyulib"
-exec "$nutoolsdir/pyulib/src/uapps/$scriptname.py" "$@"
+source "$nutoolsdir/lib/ulib/nutools/pyulib"
+exec "$nutoolsdir/lib/pyulib/src/uapps/$scriptname.py" "$@"
diff --git a/lib/script.template b/lib/script.template
index 36866c9..5e4c13e 100755
--- a/lib/script.template
+++ b/lib/script.template
@@ -1,6 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
-source "$(dirname "$0")/ulib/ulib" || exit 1; urequire DEFAULTS
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: 
diff --git a/lib/templates/auto b/lib/templates/auto
index 9006143..ad46d84 100755
--- a/lib/templates/auto
+++ b/lib/templates/auto
@@ -23,10 +23,9 @@ if [ $# -eq 2 ]; then
     fi
 fi
 
-#source /etc/ulib &&
-source "$(dirname "$0")/../../ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
+#source /etc/ulib || exit 1
+source "$(dirname "$0")/../../ulib/ulib" || exit 1
+urequire DEFAULTS
 
 [ $# -eq 1 -a "$1" == "--help" ] && exit_with display_help
 
diff --git a/lib/templates/java b/lib/templates/java
index 11648c9..94437ee 100755
--- a/lib/templates/java
+++ b/lib/templates/java
@@ -46,10 +46,9 @@ if [ $# -eq 2 ]; then
     fi
 fi
 
-#source /etc/ulib &&
-source "$(dirname "$0")/../../ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
+#source /etc/ulib || exit 1
+source "$(dirname "$0")/../../lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function check_overwrite() {
     if [ -e "$1" -a -z "$overwrite" ]; then
diff --git a/lib/templates/puppet b/lib/templates/puppet
index 4522e3b..60f8229 100755
--- a/lib/templates/puppet
+++ b/lib/templates/puppet
@@ -46,10 +46,9 @@ if [ $# -eq 2 ]; then
     fi
 fi
 
-#source /etc/ulib &&
-source "$(dirname "$0")/../../ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
+#source /etc/ulib || exit 1
+source "$(dirname "$0")/../../lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function check_overwrite() {
     if [ -e "$1" -a -z "$overwrite" ]; then
diff --git a/lib/templates/script.template b/lib/templates/script.template
index f4b8c94..aee03bf 100644
--- a/lib/templates/script.template
+++ b/lib/templates/script.template
@@ -49,10 +49,9 @@ if [ $# -eq 2 ]; then
     fi
 fi
 
-#source /etc/ulib &&
-source "$(dirname "$0")/../../ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
+#source /etc/ulib || exit 1
+source "$(dirname "$0")/../../lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function check_overwrite() {
     if [ -e "$1" -a -z "$overwrite" ]; then
diff --git a/lib/templates/shell b/lib/templates/shell
index 30dab61..90ab59a 100755
--- a/lib/templates/shell
+++ b/lib/templates/shell
@@ -53,7 +53,7 @@ if [ $# -eq 2 ]; then
 fi
 
 #source /etc/ulib || exit 1
-source "$(dirname "$0")/../../ulib/ulib" || exit 1
+source "$(dirname "$0")/../../lib/ulib/ulib" || exit 1
 urequire DEFAULTS
 
 set_defaults nutools
diff --git a/lib/templates/text b/lib/templates/text
index 7c303b7..3ececcb 100755
--- a/lib/templates/text
+++ b/lib/templates/text
@@ -46,10 +46,9 @@ if [ $# -eq 2 ]; then
     fi
 fi
 
-#source /etc/ulib &&
-source "$(dirname "$0")/../../ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
+#source /etc/ulib || exit 1
+source "$(dirname "$0")/../../lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function check_overwrite() {
     if [ -e "$1" -a -z "$overwrite" ]; then
diff --git a/lib/templates/www b/lib/templates/www
index 9482ada..b2bd693 100755
--- a/lib/templates/www
+++ b/lib/templates/www
@@ -46,10 +46,9 @@ if [ $# -eq 2 ]; then
     fi
 fi
 
-#source /etc/ulib &&
-source "$(dirname "$0")/../../ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
+#source /etc/ulib || exit 1
+source "$(dirname "$0")/../../lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function check_overwrite() {
     if [ -e "$1" -a -z "$overwrite" ]; then
diff --git a/lib/tiddlywiki/download-latest.sh b/lib/tiddlywiki/download-latest.sh
index 613259b..73dde68 100755
--- a/lib/tiddlywiki/download-latest.sh
+++ b/lib/tiddlywiki/download-latest.sh
@@ -1,10 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
-
-source "$(dirname "$0")/../../ulib/ulib" &&
-urequire DEFAULTS tiddlywiki ||
-exit 1
-OENC="$UTF8"
+source "$(dirname "$0")/../../lib/ulib/ulib" || exit 1
+urequire DEFAULTS tiddlywiki
 
 function display_help() {
     echo "$scriptname: Télécharger la dernière version de TiddlyWiki"
diff --git a/lib/uinst/conf b/lib/uinst/conf
index 68b79d9..fa2bac2 100644
--- a/lib/uinst/conf
+++ b/lib/uinst/conf
@@ -1,7 +1,8 @@
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
 
 source "$@" || exit 1
-source "$ULIBDIR/ulib" && urequire DEFAULTS uenv uenv_update || exit 1
+source "$ULIBDIR/ulib" || exit 1
+urequire DEFAULTS uenv uenv_update
 cd "$scriptdir/../.."
 
 # supprimer les fichiers de VCS
@@ -11,13 +12,13 @@ rm -rf .git
 rm -f .nutools-devel
 
 # supprimer fichiers de développement
-rm -rf pyulib/{build,devel,migrate,test}
+rm -rf lib/pyulib/{build,devel,migrate,test}
 
 # liens pour les scripts python
 for i in plver plbck uencdetect urandomize umail uxpath wofixsql; do
     ln -s lib/pywrapper "$i"
 done
-ln -s ulib/support/cgiupload.py
+ln -s lib/ulib/support/cgiupload.py
 
 # liens pour les scripts shell
 for i in cg cgs; do
diff --git a/lib/uinst/rootconf b/lib/uinst/rootconf
index c3cbb6f..5620d3b 100644
--- a/lib/uinst/rootconf
+++ b/lib/uinst/rootconf
@@ -1,24 +1,25 @@
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
 
 source "$@" || exit 1
-source "$ULIBDIR/ulib" && urequire DEFAULTS || exit 1
+source "$ULIBDIR/ulib" || exit 1
+urequire DEFAULTS
 
-cd "$scriptdir/../../"
+cd "$scriptdir/../.."
 log=/tmp/nutools-pyulib-install.log
 etitle -s "Installation des packages python"
 enote "Le log de l'installation se trouve dans $log"
-./uinst -y pyulib >&"$log"
+./uinst -y lib/pyulib >&"$log"
 eend
 
 # setup.py laisse des fichiers avec les droits de root, et ces fichiers ne
 # peuvent être supprimés par l'utilisateur qui lance uinst. Les supprimer ici.
-rm -rf pyulib/build
+rm -rf lib/pyulib/build
 
 dest="@@dest@@"
 for i in ulib ulibsh; do
-    sed "s|@@""dest""@@|$dest|g" "ulib/$i" >"/etc/$i"
+    sed "s|@@""dest""@@|$dest|g" "lib/ulib/$i" >"/etc/$i"
 done
-cp ulib/.ulib_version /etc/.ulib_version
+cp lib/ulib/.ulib_version /etc/.ulib_version
 echo >/etc/ulibauto '# -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
 if [ x"$BASH" != x -a -f /etc/ulib ]; then
     . /etc/ulib
diff --git a/lib/ulib/base b/lib/ulib/base
index 4a66105..a29851b 100644
--- a/lib/ulib/base
+++ b/lib/ulib/base
@@ -11,6 +11,11 @@ elif [ "$0" == "-bash" ]; then
     scriptname=
     scriptdir=
     script=
+elif [ ! -f "$0" -a -f "${0#-}" ]; then
+    scriptname="$(basename -- "${0#-}")"
+    scriptdir="$(dirname -- "${0#-}")"
+    scriptdir="$(cd "$scriptdir"; pwd)"
+    script="$scriptdir/$scriptname"
 else
     scriptname="$(basename -- "$0")"
     scriptdir="$(dirname -- "$0")"
diff --git a/lib/ulib/support/install-pubkeys.sh b/lib/ulib/support/install-pubkeys.sh
index 3541b93..66e74f8 100755
--- a/lib/ulib/support/install-pubkeys.sh
+++ b/lib/ulib/support/install-pubkeys.sh
@@ -29,6 +29,79 @@ export TMPDIR="${TMPDIR:-${TMP:-${TEMP:-/tmp}}}"
 [ -f /etc/nutoolsrc ] && . /etc/nutoolsrc
 [ -f ~/.nutoolsrc ] && . ~/.nutoolsrc
 
+function recho() {
+    if [[ "${1:0:2}" == -[eEn] ]]; then
+        echo -n -
+        local first="${1:1}"; shift
+        echo "$first$@"
+    else
+        echo "$@"
+    fi
+}
+function recho_() {
+    if [[ "${1:0:2}" == -[eEn] ]]; then
+        echo -n -
+        local first="${1:1}"; shift
+        echo -n "$first$@"
+    else
+        echo -n "$@"
+    fi
+}
+function qval() {
+    local s="$*"
+    s="${s//\\/\\\\}"
+    s="${s//\"/\\\"}"
+    s="${s//\$/\\\$}"
+    s="${s//\`/\\\`}"
+    recho_ "$s"
+}
+function should_quote() {
+    [ -z "$1" ] && return 0
+    local s="${*//[a-zA-Z0-9]/}"
+    s="${s//,/}"
+    s="${s//./}"
+    s="${s//+/}"
+    s="${s//\//}"
+    s="${s//-/}"
+    s="${s//_/}"
+    s="${s//=/}"
+    [ -n "$s" ]
+}
+function qvals() {
+    local arg first=1
+    for arg in "$@"; do
+        [ -z "$first" ] && echo -n " "
+        if should_quote "$arg"; then
+            echo -n \"
+            qval "$arg"
+            echo -n \"
+        else
+            recho_ "$arg"
+        fi
+        first=
+    done
+}
+function qlines() {
+    sed "s/'/'\\\\''/g; s/.*/'&'/g"
+}
+function setv() {
+    local __s_var="$1"; shift
+    eval "$__s_var=\"$(qval "$*")\""
+}
+function setx() {
+    local __s_var="$1"; shift
+    eval "$__s_var=\"\$(\"\$@\")\""
+}
+function seta() {
+    local __s_array="$1"; shift
+    eval "$__s_array=($("$@" | qlines))"
+}
+function e2of() {
+    "$@" 2>&1
+}
+function nef() {
+    "$@" | sed '/^$/d'
+}
 
 function isnum() {
     [ ${#1} -gt 0 ] || return 1
@@ -53,14 +126,10 @@ function isrnum() {
     [ -z "$v" ]
 }
 function is_yes() {
-    [ "$1" == "o" -o "$1" == "O" -o "$1" == "oui" -o "$1" == "OUI" ] && return 0
-    [ "$1" == "y" -o "$1" == "Y" -o "$1" == "yes" -o "$1" == "YES" ] && return 0
-    [ "$1" == "v" -o "$1" == "V" -o "$1" == "vrai" -o "$1" == "VRAI" ] && return 0
-    [ "$1" == "t" -o "$1" == "T" -o "$1" == "true" -o "$1" == "TRUE" ] && return 0
-    [ "$1" == "on" -o "$1" == "ON" ] && return 0
-    if isnum "$1"; then
-        [ "$1" -ne 0 ] && return 0
-    fi
+    case "${1,,}" in
+    o|oui|y|yes|v|vrai|t|true|on) return 0;;
+    esac
+    isnum "$1" && [ "$1" -ne 0 ] && return 0
     return 1
 }
 function yesval() {
@@ -79,14 +148,10 @@ function normyesvals() {
     done
 }
 function is_no() {
-    [ "$1" == "n" -o "$1" == "N" -o "$1" == "non" -o "$1" == "NON" ] && return 0
-    [ "$1" == "no" -o "$1" == "NO" ] && return 0
-    [ "$1" == "f" -o "$1" == "F" -o "$1" == "faux" -o "$1" == "FAUX" ] && return 0
-    [ "$1" == "false" -o "$1" == "FALSE" ] && return 0
-    [ "$1" == "off" -o "$1" == "OFF" ] && return 0
-    if isnum "$1"; then
-        [ "$1" -eq 0 ] && return 0
-    fi
+    case "${1,,}" in
+    n|non|no|f|faux|false|off) return 0;;
+    esac
+    isnum "$1" && [ "$1" -eq 0 ] && return 0
     return 1
 }
 function rawecho() {
@@ -115,18 +180,6 @@ function quote_arg() {
     s="${s//\`/\\\`}"
     rawecho "$s"
 }
-function should_quote() {
-    [ -z "$1" ] && return 0
-    local s="${1//[a-zA-Z0-9]/}"
-    s="${s//,/}"
-    s="${s//./}"
-    s="${s//+/}"
-    s="${s//\//}"
-    s="${s//-/}"
-    s="${s//_/}"
-    s="${s//=/}"
-    [ -n "$s" ]
-}
 function quoted_arg() {
     should_quote "$1" && echo "\"$(quote_arg "$1")\"" || quote_arg "$1"
 }
@@ -403,6 +456,18 @@ function array_fillrange() {
     done
     array_copy "$1" __af_vs
 }
+function array_eq() {
+    local -a __ae_a1 __ae_a2
+    array_copy __ae_a1 "$1"
+    array_copy __ae_a2 "$2"
+    [ ${#__ae_a1[*]} -eq ${#__ae_a2[*]} ] || return 1
+    local __ae_v __ae_i=0
+    for __ae_v in "${__ae_a1[@]}"; do
+        [ "$__ae_v" == "${__ae_a2[$__ae_i]}" ] || return 1
+        __ae_i=$(($__ae_i + 1))
+    done
+    return 0
+}
 function array_contains() {
     local __ac_v
     eval 'for __ac_v in "${'"$1"'[@]}"; do
@@ -512,14 +577,14 @@ function array_extend_lasts() {
     eval "$1=(\"\${$1[@]}\" \"\${$2[@]:1}\")"
 }
 function array_xsplit() {
-    eval "$1=($(<<<"$2" stripnl | awkrun RS="${3:-:}" '
+    eval "$1=($(recho_ "$2" | awkrun RS="${3:-:}" '
 {
     gsub(/'\''/, "'\'\\\\\'\''")
     print "'\''" $0 "'\''"
 }'))" #"
 }
 function array_split() {
-    eval "$1=($(<<<"$2" stripnl | awkrun RS="${3:-:}" '
+    eval "$1=($(recho_ "$2" | awkrun RS="${3:-:}" '
 /^$/ { next }
 {
     gsub(/'\''/, "'\'\\\\\'\''")
@@ -530,14 +595,14 @@ function array_from_path() {
     array_split "$1" "$2" ":"
 }
 function array_from_xlines() {
-    eval "$1=($(<<<"$2" _nl2lf | awk '
+    eval "$1=($(recho_ "$2" | _nl2lf | awk '
 {
     gsub(/'\''/, "'\'\\\\\'\''")
     print "'\''" $0 "'\''"
 }'))" #"
 }
 function array_from_lines() {
-    eval "$1=($(<<<"$2" _nl2lf | awk '
+    eval "$1=($(recho_ "$2" | _nl2lf | awk '
 /^$/ { next }
 {
     gsub(/'\''/, "'\'\\\\\'\''")
@@ -591,7 +656,7 @@ function array_fix_paths() {
     array_copy __afp_vs "$__afp_an"
     array_new "$__afp_an"
     for __afp_v in "${__afp_vs[@]}"; do
-        array_split __afp_v "$__afp_v"
+        array_split __afp_v "$__afp_v" "$__afp_s"
         array_extend "$__afp_an" __afp_v
     done
 }
@@ -624,12 +689,9 @@ function parse_date() {
         }')"
     esac
     case "$type" in
-    d|date)
-        awk '{ print strftime("%d/%m/%Y", $0 + 0) }' <<<"$value"
-        ;;
-    l|ldap)
-        awk '{ print strftime("%Y%m%d%H%M%S+0400", $0 + 0) }' <<<"$value"
-        ;;
+    d|date) awk '{ print strftime("%d/%m/%Y", $0 + 0) }' <<<"$value";;
+    l|ldap) awk '{ print strftime("%Y%m%d%H%M%S+0400", $0 + 0) }' <<<"$value";;
+    m|mysql) awk '{ print strftime("%Y-%m-%d", $0 + 0) }' <<<"$value";;
     *)
         rawecho "$value"
         ;;
@@ -899,6 +961,13 @@ function testsame() {
 function testdiff() {
     ! quietdiff "$@"
 }
+function testupdated() {
+    if [ -f "$2" ]; then
+        testdiff "$1" "$2"
+    else
+        return 0
+    fi
+}
 function testnewer() {
     test ! -e "$2" -o "$1" -nt "$2"
 }
@@ -989,15 +1058,16 @@ function rm_maybe() {
     done
     [ -n "$rm" ] && /bin/rm "$@"
 }
-__CPDIR_RSYNC_ARGS=()
+__CPDIR_RSYNC_SLOW=1 # synchro potentiellement plus lente, mais plus fidèle (option -c)
+__CPDIR_RSYNC_ARGS=(-q)
 function cpdir() {
 
     if progexists rsync; then
         [ -d "$2" ] || mkdir -p "$2" || return 1
         if [ -d "$1" ]; then
-            rsync -qa "${__CPDIR_RSYNC_ARGS[@]}" "$1/" "$2/" 
+            rsync -a ${__CPDIR_RSYNC_SLOW:+-c} "${__CPDIR_RSYNC_ARGS[@]}" "$1/" "$2/" 
         else
-            rsync -qa "${__CPDIR_RSYNC_ARGS[@]}" "$1" "$2/"
+            rsync -a ${__CPDIR_RSYNC_SLOW:+-c} "${__CPDIR_RSYNC_ARGS[@]}" "$1" "$2/"
         fi
     else
         __cpdir "$@"
@@ -1033,17 +1103,17 @@ function __cpdir() {
         fi
     fi
 }
-CPNOVCS_OPTS=() # deprecated
-__CPNOVCS_RSYNC_ARGS=()
+__CPNOVCS_RSYNC_SLOW=1 # synchro potentiellement plus lente, mais plus fidèle (option -c)
+__CPNOVCS_RSYNC_ARGS=(-q)
 function cpnovcs() {
     local src="$1" destdir="$2"
     [ -d "$destdir" ] || mkdir -p "$destdir" || return 1
     if progexists rsync; then
         local gitexclude=/.git/
-        if [ "${src%/}" != "$src" ]; then
+        if [ "${src%/}" == "$src" ]; then
             gitexclude="/$(basename -- "$src")$gitexclude"
         fi
-        rsync -qa --exclude CVS --exclude .svn --exclude "$gitexclude" "${CPNOVCS_OPTS[@]}" "${__CPNOVCS_RSYNC_ARGS[@]}" "$src" "$destdir/"
+        rsync -a ${__CPNOVCS_RSYNC_SLOW:+-c} --exclude CVS/ --exclude .svn/ --exclude "$gitexclude" "${__CPNOVCS_RSYNC_ARGS[@]}" "$src" "$destdir/"
     elif [ "${src%/}" != "$src" ]; then
         __cpdir "$src" "$destdir"
     else
@@ -1271,11 +1341,25 @@ function get_archive_appname() {
     print substr($0, 1, RSTART - 1)
   } else if (match($0, /([0-9]+([-_.][0-9]+)*([a-zA-Z][0-9]*|[-_.][0-9]+[a-zA-Z][0-9]*)?)$/)) {
     print substr($0, 1, RSTART - 1)
+  } else if (match($0, /([0-9]+[a-z][a-z][a-z0-9]?)$/, vs)) {
+    print substr($0, 1, RSTART - 1)
   } else {
     print $0
   }
 }'
 }
+function get_archive_versionsuffix() {
+    local basename="$(get_archive_basename "$1")"
+    echo "$basename" | awk '{
+  if (match($0, /([-_.][0-9]+([-_.][0-9]+)*([a-zA-Z][0-9]*|[-_.][0-9]+[a-zA-Z][0-9]*)?)$/, vs)) {
+    print vs["1"]
+  } else if (match($0, /([0-9]+([-_.][0-9]+)*([a-zA-Z][0-9]*|[-_.][0-9]+[a-zA-Z][0-9]*)?)$/, vs)) {
+    print vs["1"]
+  } else if (match($0, /([0-9]+[a-z][a-z][a-z0-9]?)$/, vs)) {
+    print vs["1"]
+  }
+}'
+}
 function get_archive_version() {
     local basename="$(get_archive_basename "$1")"
     echo "$basename" | awk '{
@@ -1283,7 +1367,7 @@ function get_archive_version() {
     print vs["1"]
   } else if (match($0, /([0-9]+([-_.][0-9]+)*([a-zA-Z][0-9]*|[-_.][0-9]+[a-zA-Z][0-9]*)?)$/, vs)) {
     print vs["1"]
-  } else if (match($0, /([0-9]+[a-z][a-z][a-z]?)$/, vs)) {
+  } else if (match($0, /([0-9]+[a-z][a-z][a-z0-9]?)$/, vs)) {
     print vs["1"]
   }
 }'
@@ -1504,6 +1588,13 @@ function quote_sql(s) {'"
   gsub(/'/, \"''\", s)
   return \"'\" s \"'\"
 "'}
+function unquote_mysqlcsv(s) {
+  gsub(/\\n/, "\n", s)
+  gsub(/\\t/, "\t", s)
+  gsub(/\\0/, "\0", s)
+  gsub(/\\\\/, "\\", s)
+  return s
+}
 function array_new(dest) {
   dest[0] = 0 # forcer awk à considérer dest comme un tableau
   delete dest
@@ -1807,7 +1898,7 @@ function array_formatcsv2(fields, colsep, mvsep, qchar, echar,      count, indic
       if (echar != "") gsub(qchar, quote_subrepl(echar) "&", value);
       else gsub(qchar, "&&", value);
     }
-    if (qchar != "" && (index(value, mvsep) != 0 || index(value, colsep) != 0 || __csv_should_quote(value))) {
+    if (qchar != "" && (index(value, mvsep) != 0 || index(value, colsep) != 0 || index(value, qchar) != 0 || __csv_should_quote(value))) {
       line = line qchar value qchar
     } else {
       line = line value
@@ -1981,12 +2072,12 @@ function awkdef() {
 }
 function lawkrun() {
     local -a __ar_defs __ar_args
-    while [ -n "$1" -a "$1" != "--" ]; do
+    while [ $# -gt 0 -a "$1" != "--" ]; do
         __ar_defs=("${__ar_defs[@]}" "$1")
         shift
     done
     shift
-    while [ -n "$1" ]; do
+    while [ $# -gt 0 ]; do
         __ar_args=("${__ar_args[@]}" "$1")
         shift
     done
@@ -2341,6 +2432,13 @@ function pidfile_check() {
     fi
     return 1
 }
+function page_maybe() {
+    if isatty; then
+        less -XF
+    else
+        cat
+    fi
+}
 
 
 function utools_local() {
@@ -2638,6 +2736,29 @@ function eecho_() {
 function edebug() {
     show_debug || return; eflush; __edebug "$*" 1>&2
 }
+function trace() {
+    local r cmd="$(quoted_args "$@")"
+    show_info && { eflush; __eecho "\$ $cmd" 1>&2; }
+    "$@"; r=$?
+    if [ $r -ne 0 ]; then
+        if show_info; then
+            eflush; __eecho "^ [EC #$r]" 1>&2
+        elif show_error; then
+            eflush; __eecho "^ $cmd [EC #$r]" 1>&2;
+        fi
+    fi
+    return $r
+}
+function trace_error() {
+    local r
+    "$@"; r=$?
+    if [ $r -ne 0 ]; then
+        local cmd="$(quoted_args "$@")"
+        show_error && { eflush; __eecho "^ $cmd [EC #$r]" 1>&2; }
+    fi
+    return $r
+}
+
 function etitle() {
     local __t_deferred=
     __t_etitle "$@"
diff --git a/lib/ulib/support/uinst2s b/lib/ulib/support/uinst2s
index 8871089..c0e5787 100755
--- a/lib/ulib/support/uinst2s
+++ b/lib/ulib/support/uinst2s
@@ -3,8 +3,8 @@
 
 # charger le fichier de configuration $1 pour avoir ULIBDIR
 source "$1" || exit 1
-source "$ULIBDIR/ulib" && urequire DEFAULTS uinst || exit 1
-OENC="$UTF8"
+source "$ULIBDIR/ulib" || exit 1
+urequire DEFAULTS uinst
 
 is_root || die "Ce script doit être lancé avec les droits de root"
 
diff --git a/lib/ulib/support/uinst2s_python b/lib/ulib/support/uinst2s_python
index 78a4ded..866f4e3 100755
--- a/lib/ulib/support/uinst2s_python
+++ b/lib/ulib/support/uinst2s_python
@@ -3,8 +3,8 @@
 
 # charger le fichier de configuration $1 pour avoir ULIBDIR
 source "$1" || exit 1
-source "$ULIBDIR/ulib" && urequire DEFAULTS uinst || exit 1
-OENC="$UTF8"
+source "$ULIBDIR/ulib" || exit 1
+urequire DEFAULTS uinst
 
 is_root || die "Ce script doit être lancé avec les droits de root"
 
diff --git a/lib/ulib/support/woinst2s b/lib/ulib/support/woinst2s
index 3ced1a5..4002d5b 100755
--- a/lib/ulib/support/woinst2s
+++ b/lib/ulib/support/woinst2s
@@ -2,10 +2,8 @@
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
 
 source "$1" || exit 1 # pour avoir la définition de ULIBDIR
-source "$ULIBDIR/ulib" &&
-urequire DEFAULTS prefixes apache webobjects wosign ||
-exit 1
-OENC="$UTF8"
+source "$ULIBDIR/ulib" || exit 1
+urequire DEFAULTS prefixes apache webobjects wosign
 
 is_root || die "Ce script doit être lancé avec les droits de root"
 
diff --git a/lib/ulib/ulib b/lib/ulib/ulib
index 0d396b2..c1c200e 100644
--- a/lib/ulib/ulib
+++ b/lib/ulib/ulib
@@ -8,7 +8,8 @@
 
 # Ensuite, des librairies individuelles de ulib peuvent être chargées avec la
 # fonction urequire(), e.g.
-#     source /etc/ulib && urequire DEFAULTS conf || exit 1
+#     source /etc/ulib || exit 1
+#     urequire DEFAULTS conf
 # 'DEFAULTS' permet de charger base, pretty, sysinfos et compat.
 
 function eerror() { echo "error: $*" 1>&2; }
@@ -18,9 +19,9 @@ function die() { [ -n "$*" ] && eerror "$*"; exit 1; }
 
 # il est possible de forcer la valeur de ULIBDIR avec FORCED_ULIBDIR. ceci est
 # utile avec bash 2.x qui ne supporte pas la variable BASH_SOURCE
-ULIBDIR="${FORCED_ULIBDIR:-@@dest@@/ulib}"
+ULIBDIR="${FORCED_ULIBDIR:-@@dest@@/lib/ulib}"
 
-if [ "$ULIBDIR" = "@@""dest""@@/ulib" ]; then
+if [ "$ULIBDIR" = "@@""dest""@@/lib/ulib" ]; then
     # La valeur "@@"dest"@@" n'est remplacée que dans la copie de ce script
     # faite dans /etc. Sinon, il faut toujours faire le calcul. Cela permet de
     # déplacer la librairie n'importe ou sur le disque, ce qui est
diff --git a/lib/ulib/ulib_version b/lib/ulib/ulib_version
index 1c611ef..6d9be94 100755
--- a/lib/ulib/ulib_version
+++ b/lib/ulib/ulib_version
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: Gestion de la version de ulib
@@ -19,10 +21,6 @@ OPTIONS
         juste tester la version et ne pas afficher le message d'information."
 }
 
-source "$(dirname "$0")/ulib" &&
-urequire DEFAULTS ||
-exit 1
-
 action=show
 version=0
 set_version=
diff --git a/lib/ulib/ulibsh b/lib/ulib/ulibsh
index 22885f6..74d0914 100644
--- a/lib/ulib/ulibsh
+++ b/lib/ulib/ulibsh
@@ -24,9 +24,9 @@ function eerror() { echo "error: $*" 1>&2; }
 function die() { [ -n "$*" ] && eerror "$*"; exit 1; }
 
 
-ULIBDIR="${FORCED_ULIBDIR:-@@dest@@/ulib}"
+ULIBDIR="${FORCED_ULIBDIR:-@@dest@@/lib/ulib}"
 
-if [ "$ULIBDIR" = "@@""dest""@@/ulib" ]; then
+if [ "$ULIBDIR" = "@@""dest""@@/lib/ulib" ]; then
     ULIBDIR="${BASH_SOURCE[0]}"
     if [ -n "$ULIBDIR" -a -f "$ULIBDIR" ]; then
         ULIBDIR="$(dirname "$ULIBDIR")"
diff --git a/mediawiki b/mediawiki
index b2a831b..bafa49b 100755
--- a/mediawiki
+++ b/mediawiki
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS awk
 
 function display_help() {
     uecho "$scriptname: Outils pour gérer une installation de MediaWiki
@@ -42,10 +44,6 @@ if [ "$#" -eq 1 -a "$1" == --nutools-makelinks ]; then
     exit 0
 fi
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS awk ||
-exit 1
-
 # Traduire le nom du script
 for script_alias in "${SCRIPT_ALIASES[@]}"; do
     splitpair "$script_alias" src dest
diff --git a/mkRewriteRules b/mkRewriteRules
index def6217..7cdf9f7 100755
--- a/mkRewriteRules
+++ b/mkRewriteRules
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: Créer un fichier de redirections pour Apache à partir d'un certain
@@ -80,10 +82,6 @@ Dans les exemples donnés ci-dessus, $URL est l'\''url générée par la réécr
 et $proxy_acls la valeur du champ proxy_acls spécifiée ci-dessus.'
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-
 proxy_enabled=
 infile=
 outfile="RewriteRules.conf"
diff --git a/mkiso b/mkiso
index add594c..9fdbaf9 100755
--- a/mkiso
+++ b/mkiso
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: créer une image iso d'un répertoire
@@ -12,10 +14,6 @@ OPTIONS
         créer une image hybride ISO/HFS"
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-
 hfsmode=
 parse_opts "${PRETTYOPTS[@]}" \
     --help '$exit_with display_help' \
diff --git a/mkurl b/mkurl
index af5b6a7..a9dadbc 100755
--- a/mkurl
+++ b/mkurl
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: Enregistrer une url dans un fichier raccourci
@@ -14,10 +16,6 @@ raccourci utilisable aussi sous Windows, ou avec l'extension .desktop pour
 compatibilité avec le standard XDG"
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-
 parse_opts "${PRETTYOPTS[@]}" \
     --help '$exit_with display_help' \
     @ args -- "$@" && set -- "${args[@]}" || die "$args"
diff --git a/mkusfx b/mkusfx
index 96c008e..5bf5e81 100755
--- a/mkusfx
+++ b/mkusfx
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: Créer une archive auto-extractible qui installe son contenu avec uinst
@@ -29,10 +31,6 @@ OPTIONS
         locale de ulib et uinst.sh"
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-
 MAKESELFDIR="$scriptdir/lib/makeself-2.1.5"
 
 sfxtype=uinst
diff --git a/mocifs b/mocifs
index 526cade..3821f9e 100755
--- a/mocifs
+++ b/mocifs
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: Monter un partage Windows/Samba/CIFS
@@ -24,10 +26,6 @@ OPTIONS
         Spécifier les credentials à utiliser pour la connexion"
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-
 if ! progexists mount.cifs; then
     [ -x /sbin/mount.cifs ] || die "Ce script nécessite cifs-utils. Sur debian, vous pouvez l'installer avec la commande
     sudo apt-get install cifs-utils"
diff --git a/modav b/modav
index 9f79fdc..9d4fe8f 100755
--- a/modav
+++ b/modav
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: Monter un répertoire sur un hôte distant avec davfs
@@ -38,10 +40,6 @@ OPTIONS
             mountpoint  username    password"
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-
 if ! progexists mount.davfs; then
     [ -x /usr/sbin/mount.davfs ] || die "Ce script nécessite davfs2. Sur debian, vous pouvez l'installer avec la commande
     sudo apt-get install davfs2"
diff --git a/moiso b/moiso
index 2a63c55..ae5347f 100755
--- a/moiso
+++ b/moiso
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: Monter une image ISO
@@ -18,10 +20,6 @@ OPTIONS
         Forcer le démontage"
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-
 action=auto
 parse_opts "${PRETTYOPTS[@]}" \
     --help '$exit_with display_help' \
diff --git a/mossh b/mossh
index 89e6a26..900cab0 100755
--- a/mossh
+++ b/mossh
@@ -1,6 +1,6 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
-source "$(dirname "$0")/ulib/ulib" || exit 1
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
 urequire DEFAULTS
 
 function display_help() {
diff --git a/mysqlcsv b/mysqlcsv
index 36f6f44..d139389 100755
--- a/mysqlcsv
+++ b/mysqlcsv
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: Faire une requête MySQL et formater la sortie pour traitement avec awkcsv
@@ -63,10 +65,6 @@ OPTIONS
         arguments."
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-
 host=
 port=
 user=
diff --git a/mysqlloadcsv b/mysqlloadcsv
index 33d6252..3db3c1b 100755
--- a/mysqlloadcsv
+++ b/mysqlloadcsv
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS awk
 
 function display_help() {
     uecho "$scriptname: Charger une table MySQL avec un fichier csv
@@ -82,8 +84,6 @@ OPTIONS
         est quand même honoré."
 }
 
-source "$(dirname "$0")/ulib/ulib" || exit 1; urequire DEFAULTS awk
-
 __AWK_MYSQLFUNCS='
 function format_sqlvalue(value) {
   if (value ~ /^[0-9]+$/) {
diff --git a/openurl b/openurl
index db72e7f..4bbb31c 100755
--- a/openurl
+++ b/openurl
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: Ouvrir une URL dans un navigateur
@@ -8,10 +10,6 @@ USAGE
     $scriptname <file.url|file.desktop|URL>"
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-
 parse_opts "${PRETTYOPTS[@]}" \
     --help '$exit_with display_help' \
     @ args -- "$@" && set -- "${args[@]}" || die "$args"
diff --git a/profile b/profile
index 04cae2b..4176d45 100644
--- a/profile
+++ b/profile
@@ -3,6 +3,6 @@
 [ -z "$USER" -a -n "$LOGNAME" ] && export USER="$LOGNAME"
 
 function uprovide() { :; }
-source @@dest@@/ulib/uenv || return
+source @@dest@@/lib/ulib/uenv || return
 __uenv_source_dirs @@dest@@/profile.d "$HOME/etc/profile.d"
 __uenv_cleanup
diff --git a/rruns b/rruns
index f169314..b3c12b6 100755
--- a/rruns
+++ b/rruns
@@ -1,6 +1,6 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
-source "$(dirname "$0")/ulib/ulib" || exit 1
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
 urequire DEFAULTS runs 
 
 function display_help() {
diff --git a/ruinst b/ruinst
index 6c52ca1..492e9e3 100755
--- a/ruinst
+++ b/ruinst
@@ -1,6 +1,6 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
-source "$(dirname "$0")/ulib/ulib" || exit 1
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
 urequire DEFAULTS nutools/pyulib 
 
 function display_help() {
diff --git a/runs b/runs
index 9d48620..9fdea23 100755
--- a/runs
+++ b/runs
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS runs
 
 function display_help() {
     uecho "$scriptname: Lancer un script avec le protocole runs
@@ -56,10 +58,6 @@ Gestion des scripts
     -z  Forcer la réinstallation des scripts qui se basent sur shouldrun/setdone"
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS runs ||
-exit 1
-
 set_defaults runs
 
 function runs_path_required() {
diff --git a/rwoinst b/rwoinst
index 8a9b4ae..7cd2a6c 100755
--- a/rwoinst
+++ b/rwoinst
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS woinst
 
 function display_help() {
     uecho "$scriptname: Déploiement distant avec woinst
@@ -32,10 +34,6 @@ OPTIONS
         user@host, e.g -H user@host"
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS woinst ||
-exit 1
-
 set_defaults pubkeys
 
 action=deploy
diff --git a/twsync b/twsync
index dcf6c87..ea4d3bc 100755
--- a/twsync
+++ b/twsync
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS udir tiddlywiki javaproperties
 
 function display_help() {
     uecho "$scriptname: synchroniser un répertoire de wiki avec un tiddlywiki
@@ -33,10 +35,6 @@ OPTIONS
         située dans $(ppath "$TEMPLATE")"
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS udir tiddlywiki javaproperties ||
-exit 1
-
 TEMPLATE="$scriptdir/lib/tiddlywiki/empty.html"
 
 function find_wikifile() {
diff --git a/uawk b/uawk
index 60e4f25..9ddf93a 100755
--- a/uawk
+++ b/uawk
@@ -12,7 +12,8 @@ if [ "$#" -eq 1 -a "$1" == --nutools-makelinks ]; then
     exit 0
 fi
 
-source "$(dirname "$0")/ulib/ulib" || exit 1; urequire DEFAULTS awk
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS awk
 
 # si on lance le script uawk, donner la possibilité de choisir l'outil
 if [ "$scriptname" == uawk ] && array_contains ALIASES "${1#l}"; then
diff --git a/ubackup b/ubackup
index 93f8730..53f6c65 100755
--- a/ubackup
+++ b/ubackup
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: faire une sauvegarde des fichiers
@@ -18,10 +20,6 @@ OPTIONS
     -H  Arrêter la machine après une sauvegarde REUSSIE."
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-
 action=getargs
 profile=
 HOMEDIR="$HOME"
diff --git a/ucalc b/ucalc
index e726a44..aad849f 100755
--- a/ucalc
+++ b/ucalc
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: Afficher une valeur dans plusieurs unités
@@ -29,10 +31,6 @@ OPTIONS
         en cylindres"
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-
 unit=
 ounit=
 cyl=
diff --git a/uconf b/uconf
index b8e1175..01b4d3f 100755
--- a/uconf
+++ b/uconf
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS conf
 
 function display_help() {
     local OENC="$UTF8"
@@ -51,10 +53,6 @@ OPTIONS
         automatiquement."
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS conf ||
-exit 1
-
 action=enable
 quoted=
 type=auto
diff --git a/ucrontab b/ucrontab
index 97ba746..4fd29d9 100755
--- a/ucrontab
+++ b/ucrontab
@@ -1,5 +1,10 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+#source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+#urequire DEFAULTS crontab
+# Pour pouvoir être copié le cas échéant sur un hôte distant, la librairie ulib
+# est inclue avec uinc à partir de lib/ulib. En mode développement, il faut
+# replier les inclusions avec uinc -f et décommenter les lignes ci-dessus
 
 function display_help() {
     uecho "$scriptname: Ajouter/Supprimer une ligne dans crontab
@@ -84,10 +89,6 @@ OPTIONS
         Afficher simplement les modifications qui doivent être effectuées."
 }
 
-#source "$(dirname "$0")/ulib/ulib" &&
-#urequire DEFAULTS crontab ||
-#exit 1
-
 DEFAULT_ADELAY=1
 DEFAULT_GDELAY=15
 
@@ -116,6 +117,79 @@ export TMPDIR="${TMPDIR:-${TMP:-${TEMP:-/tmp}}}"
 [ -f /etc/nutoolsrc ] && . /etc/nutoolsrc
 [ -f ~/.nutoolsrc ] && . ~/.nutoolsrc
 
+function recho() {
+    if [[ "${1:0:2}" == -[eEn] ]]; then
+        echo -n -
+        local first="${1:1}"; shift
+        echo "$first$@"
+    else
+        echo "$@"
+    fi
+}
+function recho_() {
+    if [[ "${1:0:2}" == -[eEn] ]]; then
+        echo -n -
+        local first="${1:1}"; shift
+        echo -n "$first$@"
+    else
+        echo -n "$@"
+    fi
+}
+function qval() {
+    local s="$*"
+    s="${s//\\/\\\\}"
+    s="${s//\"/\\\"}"
+    s="${s//\$/\\\$}"
+    s="${s//\`/\\\`}"
+    recho_ "$s"
+}
+function should_quote() {
+    [ -z "$1" ] && return 0
+    local s="${*//[a-zA-Z0-9]/}"
+    s="${s//,/}"
+    s="${s//./}"
+    s="${s//+/}"
+    s="${s//\//}"
+    s="${s//-/}"
+    s="${s//_/}"
+    s="${s//=/}"
+    [ -n "$s" ]
+}
+function qvals() {
+    local arg first=1
+    for arg in "$@"; do
+        [ -z "$first" ] && echo -n " "
+        if should_quote "$arg"; then
+            echo -n \"
+            qval "$arg"
+            echo -n \"
+        else
+            recho_ "$arg"
+        fi
+        first=
+    done
+}
+function qlines() {
+    sed "s/'/'\\\\''/g; s/.*/'&'/g"
+}
+function setv() {
+    local __s_var="$1"; shift
+    eval "$__s_var=\"$(qval "$*")\""
+}
+function setx() {
+    local __s_var="$1"; shift
+    eval "$__s_var=\"\$(\"\$@\")\""
+}
+function seta() {
+    local __s_array="$1"; shift
+    eval "$__s_array=($("$@" | qlines))"
+}
+function e2of() {
+    "$@" 2>&1
+}
+function nef() {
+    "$@" | sed '/^$/d'
+}
 
 function isnum() {
     [ ${#1} -gt 0 ] || return 1
@@ -140,14 +214,10 @@ function isrnum() {
     [ -z "$v" ]
 }
 function is_yes() {
-    [ "$1" == "o" -o "$1" == "O" -o "$1" == "oui" -o "$1" == "OUI" ] && return 0
-    [ "$1" == "y" -o "$1" == "Y" -o "$1" == "yes" -o "$1" == "YES" ] && return 0
-    [ "$1" == "v" -o "$1" == "V" -o "$1" == "vrai" -o "$1" == "VRAI" ] && return 0
-    [ "$1" == "t" -o "$1" == "T" -o "$1" == "true" -o "$1" == "TRUE" ] && return 0
-    [ "$1" == "on" -o "$1" == "ON" ] && return 0
-    if isnum "$1"; then
-        [ "$1" -ne 0 ] && return 0
-    fi
+    case "${1,,}" in
+    o|oui|y|yes|v|vrai|t|true|on) return 0;;
+    esac
+    isnum "$1" && [ "$1" -ne 0 ] && return 0
     return 1
 }
 function yesval() {
@@ -166,14 +236,10 @@ function normyesvals() {
     done
 }
 function is_no() {
-    [ "$1" == "n" -o "$1" == "N" -o "$1" == "non" -o "$1" == "NON" ] && return 0
-    [ "$1" == "no" -o "$1" == "NO" ] && return 0
-    [ "$1" == "f" -o "$1" == "F" -o "$1" == "faux" -o "$1" == "FAUX" ] && return 0
-    [ "$1" == "false" -o "$1" == "FALSE" ] && return 0
-    [ "$1" == "off" -o "$1" == "OFF" ] && return 0
-    if isnum "$1"; then
-        [ "$1" -eq 0 ] && return 0
-    fi
+    case "${1,,}" in
+    n|non|no|f|faux|false|off) return 0;;
+    esac
+    isnum "$1" && [ "$1" -eq 0 ] && return 0
     return 1
 }
 function rawecho() {
@@ -202,18 +268,6 @@ function quote_arg() {
     s="${s//\`/\\\`}"
     rawecho "$s"
 }
-function should_quote() {
-    [ -z "$1" ] && return 0
-    local s="${1//[a-zA-Z0-9]/}"
-    s="${s//,/}"
-    s="${s//./}"
-    s="${s//+/}"
-    s="${s//\//}"
-    s="${s//-/}"
-    s="${s//_/}"
-    s="${s//=/}"
-    [ -n "$s" ]
-}
 function quoted_arg() {
     should_quote "$1" && echo "\"$(quote_arg "$1")\"" || quote_arg "$1"
 }
@@ -490,6 +544,18 @@ function array_fillrange() {
     done
     array_copy "$1" __af_vs
 }
+function array_eq() {
+    local -a __ae_a1 __ae_a2
+    array_copy __ae_a1 "$1"
+    array_copy __ae_a2 "$2"
+    [ ${#__ae_a1[*]} -eq ${#__ae_a2[*]} ] || return 1
+    local __ae_v __ae_i=0
+    for __ae_v in "${__ae_a1[@]}"; do
+        [ "$__ae_v" == "${__ae_a2[$__ae_i]}" ] || return 1
+        __ae_i=$(($__ae_i + 1))
+    done
+    return 0
+}
 function array_contains() {
     local __ac_v
     eval 'for __ac_v in "${'"$1"'[@]}"; do
@@ -599,14 +665,14 @@ function array_extend_lasts() {
     eval "$1=(\"\${$1[@]}\" \"\${$2[@]:1}\")"
 }
 function array_xsplit() {
-    eval "$1=($(<<<"$2" stripnl | awkrun RS="${3:-:}" '
+    eval "$1=($(recho_ "$2" | awkrun RS="${3:-:}" '
 {
     gsub(/'\''/, "'\'\\\\\'\''")
     print "'\''" $0 "'\''"
 }'))" #"
 }
 function array_split() {
-    eval "$1=($(<<<"$2" stripnl | awkrun RS="${3:-:}" '
+    eval "$1=($(recho_ "$2" | awkrun RS="${3:-:}" '
 /^$/ { next }
 {
     gsub(/'\''/, "'\'\\\\\'\''")
@@ -617,14 +683,14 @@ function array_from_path() {
     array_split "$1" "$2" ":"
 }
 function array_from_xlines() {
-    eval "$1=($(<<<"$2" _nl2lf | awk '
+    eval "$1=($(recho_ "$2" | _nl2lf | awk '
 {
     gsub(/'\''/, "'\'\\\\\'\''")
     print "'\''" $0 "'\''"
 }'))" #"
 }
 function array_from_lines() {
-    eval "$1=($(<<<"$2" _nl2lf | awk '
+    eval "$1=($(recho_ "$2" | _nl2lf | awk '
 /^$/ { next }
 {
     gsub(/'\''/, "'\'\\\\\'\''")
@@ -678,7 +744,7 @@ function array_fix_paths() {
     array_copy __afp_vs "$__afp_an"
     array_new "$__afp_an"
     for __afp_v in "${__afp_vs[@]}"; do
-        array_split __afp_v "$__afp_v"
+        array_split __afp_v "$__afp_v" "$__afp_s"
         array_extend "$__afp_an" __afp_v
     done
 }
@@ -711,12 +777,9 @@ function parse_date() {
         }')"
     esac
     case "$type" in
-    d|date)
-        awk '{ print strftime("%d/%m/%Y", $0 + 0) }' <<<"$value"
-        ;;
-    l|ldap)
-        awk '{ print strftime("%Y%m%d%H%M%S+0400", $0 + 0) }' <<<"$value"
-        ;;
+    d|date) awk '{ print strftime("%d/%m/%Y", $0 + 0) }' <<<"$value";;
+    l|ldap) awk '{ print strftime("%Y%m%d%H%M%S+0400", $0 + 0) }' <<<"$value";;
+    m|mysql) awk '{ print strftime("%Y-%m-%d", $0 + 0) }' <<<"$value";;
     *)
         rawecho "$value"
         ;;
@@ -986,6 +1049,13 @@ function testsame() {
 function testdiff() {
     ! quietdiff "$@"
 }
+function testupdated() {
+    if [ -f "$2" ]; then
+        testdiff "$1" "$2"
+    else
+        return 0
+    fi
+}
 function testnewer() {
     test ! -e "$2" -o "$1" -nt "$2"
 }
@@ -1076,15 +1146,16 @@ function rm_maybe() {
     done
     [ -n "$rm" ] && /bin/rm "$@"
 }
-__CPDIR_RSYNC_ARGS=()
+__CPDIR_RSYNC_SLOW=1 # synchro potentiellement plus lente, mais plus fidèle (option -c)
+__CPDIR_RSYNC_ARGS=(-q)
 function cpdir() {
 
     if progexists rsync; then
         [ -d "$2" ] || mkdir -p "$2" || return 1
         if [ -d "$1" ]; then
-            rsync -qa "${__CPDIR_RSYNC_ARGS[@]}" "$1/" "$2/" 
+            rsync -a ${__CPDIR_RSYNC_SLOW:+-c} "${__CPDIR_RSYNC_ARGS[@]}" "$1/" "$2/" 
         else
-            rsync -qa "${__CPDIR_RSYNC_ARGS[@]}" "$1" "$2/"
+            rsync -a ${__CPDIR_RSYNC_SLOW:+-c} "${__CPDIR_RSYNC_ARGS[@]}" "$1" "$2/"
         fi
     else
         __cpdir "$@"
@@ -1120,17 +1191,17 @@ function __cpdir() {
         fi
     fi
 }
-CPNOVCS_OPTS=() # deprecated
-__CPNOVCS_RSYNC_ARGS=()
+__CPNOVCS_RSYNC_SLOW=1 # synchro potentiellement plus lente, mais plus fidèle (option -c)
+__CPNOVCS_RSYNC_ARGS=(-q)
 function cpnovcs() {
     local src="$1" destdir="$2"
     [ -d "$destdir" ] || mkdir -p "$destdir" || return 1
     if progexists rsync; then
         local gitexclude=/.git/
-        if [ "${src%/}" != "$src" ]; then
+        if [ "${src%/}" == "$src" ]; then
             gitexclude="/$(basename -- "$src")$gitexclude"
         fi
-        rsync -qa --exclude CVS --exclude .svn --exclude "$gitexclude" "${CPNOVCS_OPTS[@]}" "${__CPNOVCS_RSYNC_ARGS[@]}" "$src" "$destdir/"
+        rsync -a ${__CPNOVCS_RSYNC_SLOW:+-c} --exclude CVS/ --exclude .svn/ --exclude "$gitexclude" "${__CPNOVCS_RSYNC_ARGS[@]}" "$src" "$destdir/"
     elif [ "${src%/}" != "$src" ]; then
         __cpdir "$src" "$destdir"
     else
@@ -1358,11 +1429,25 @@ function get_archive_appname() {
     print substr($0, 1, RSTART - 1)
   } else if (match($0, /([0-9]+([-_.][0-9]+)*([a-zA-Z][0-9]*|[-_.][0-9]+[a-zA-Z][0-9]*)?)$/)) {
     print substr($0, 1, RSTART - 1)
+  } else if (match($0, /([0-9]+[a-z][a-z][a-z0-9]?)$/, vs)) {
+    print substr($0, 1, RSTART - 1)
   } else {
     print $0
   }
 }'
 }
+function get_archive_versionsuffix() {
+    local basename="$(get_archive_basename "$1")"
+    echo "$basename" | awk '{
+  if (match($0, /([-_.][0-9]+([-_.][0-9]+)*([a-zA-Z][0-9]*|[-_.][0-9]+[a-zA-Z][0-9]*)?)$/, vs)) {
+    print vs["1"]
+  } else if (match($0, /([0-9]+([-_.][0-9]+)*([a-zA-Z][0-9]*|[-_.][0-9]+[a-zA-Z][0-9]*)?)$/, vs)) {
+    print vs["1"]
+  } else if (match($0, /([0-9]+[a-z][a-z][a-z0-9]?)$/, vs)) {
+    print vs["1"]
+  }
+}'
+}
 function get_archive_version() {
     local basename="$(get_archive_basename "$1")"
     echo "$basename" | awk '{
@@ -1370,7 +1455,7 @@ function get_archive_version() {
     print vs["1"]
   } else if (match($0, /([0-9]+([-_.][0-9]+)*([a-zA-Z][0-9]*|[-_.][0-9]+[a-zA-Z][0-9]*)?)$/, vs)) {
     print vs["1"]
-  } else if (match($0, /([0-9]+[a-z][a-z][a-z]?)$/, vs)) {
+  } else if (match($0, /([0-9]+[a-z][a-z][a-z0-9]?)$/, vs)) {
     print vs["1"]
   }
 }'
@@ -1591,6 +1676,13 @@ function quote_sql(s) {'"
   gsub(/'/, \"''\", s)
   return \"'\" s \"'\"
 "'}
+function unquote_mysqlcsv(s) {
+  gsub(/\\n/, "\n", s)
+  gsub(/\\t/, "\t", s)
+  gsub(/\\0/, "\0", s)
+  gsub(/\\\\/, "\\", s)
+  return s
+}
 function array_new(dest) {
   dest[0] = 0 # forcer awk à considérer dest comme un tableau
   delete dest
@@ -1894,7 +1986,7 @@ function array_formatcsv2(fields, colsep, mvsep, qchar, echar,      count, indic
       if (echar != "") gsub(qchar, quote_subrepl(echar) "&", value);
       else gsub(qchar, "&&", value);
     }
-    if (qchar != "" && (index(value, mvsep) != 0 || index(value, colsep) != 0 || __csv_should_quote(value))) {
+    if (qchar != "" && (index(value, mvsep) != 0 || index(value, colsep) != 0 || index(value, qchar) != 0 || __csv_should_quote(value))) {
       line = line qchar value qchar
     } else {
       line = line value
@@ -2068,12 +2160,12 @@ function awkdef() {
 }
 function lawkrun() {
     local -a __ar_defs __ar_args
-    while [ -n "$1" -a "$1" != "--" ]; do
+    while [ $# -gt 0 -a "$1" != "--" ]; do
         __ar_defs=("${__ar_defs[@]}" "$1")
         shift
     done
     shift
-    while [ -n "$1" ]; do
+    while [ $# -gt 0 ]; do
         __ar_args=("${__ar_args[@]}" "$1")
         shift
     done
@@ -2428,6 +2520,13 @@ function pidfile_check() {
     fi
     return 1
 }
+function page_maybe() {
+    if isatty; then
+        less -XF
+    else
+        cat
+    fi
+}
 
 
 function utools_local() {
@@ -2725,6 +2824,29 @@ function eecho_() {
 function edebug() {
     show_debug || return; eflush; __edebug "$*" 1>&2
 }
+function trace() {
+    local r cmd="$(quoted_args "$@")"
+    show_info && { eflush; __eecho "\$ $cmd" 1>&2; }
+    "$@"; r=$?
+    if [ $r -ne 0 ]; then
+        if show_info; then
+            eflush; __eecho "^ [EC #$r]" 1>&2
+        elif show_error; then
+            eflush; __eecho "^ $cmd [EC #$r]" 1>&2;
+        fi
+    fi
+    return $r
+}
+function trace_error() {
+    local r
+    "$@"; r=$?
+    if [ $r -ne 0 ]; then
+        local cmd="$(quoted_args "$@")"
+        show_error && { eflush; __eecho "^ $cmd [EC #$r]" 1>&2; }
+    fi
+    return $r
+}
+
 function etitle() {
     local __t_deferred=
     __t_etitle "$@"
@@ -4185,8 +4307,8 @@ BEGIN {
   match_indented = 0
 }
 
-/^(export[ \t]+)?[a-zA-Z_][a-zA-Z0-9_]*[-+%#]=/ {
-  match($0, /^(export[ \t]+)?([a-zA-Z_][a-zA-Z0-9_]*)([-+%#])=(.*)$/, parts)
+/^(export[ \t]+)?[a-zA-Z_][a-zA-Z0-9_]*[-+%#?]=/ {
+  match($0, /^(export[ \t]+)?([a-zA-Z_][a-zA-Z0-9_]*)([-+%#?])=(.*)$/, parts)
   name = parts[2]
   type = parts[3]
   value = parts[4]
@@ -4196,6 +4318,8 @@ BEGIN {
     print "uinspath " value " " name
   } else if (type == "-") {
     print "udelpath " value " " name
+  } else if (type == "?") {
+    print "[ -n \"$" name "\" ] || " name "=" value
   }
   print "export " name
   next
diff --git a/udir b/udir
index b1e1d82..1ac2c12 100755
--- a/udir
+++ b/udir
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS udir
 
 function display_help() {
     uecho "$scriptname: gérer les variables de répertoire
@@ -116,10 +118,6 @@ root_scripts
             destination."
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS udir ||
-exit 1
-
 action=auto
 parse_opts "${PRETTYOPTS[@]}" \
     --help '$exit_with display_help' \
diff --git a/udist b/udist
index 42a70cd..2ce0402 100755
--- a/udist
+++ b/udist
@@ -145,9 +145,8 @@ if [ "$#" -eq 1 -a "$1" == --nutools-makelinks ]; then
     exit 0
 fi
 
-source $(dirname "$0")/ulib/ulib &&
-urequire DEFAULTS conf install ||
-exit 1
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS conf install
 INSTALL_VERBOSE=
 INSTALL_USES_PPATH=1
 
diff --git a/uenv b/uenv
index 3f10a7c..05a7a48 100755
--- a/uenv
+++ b/uenv
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS uenv uenv_update
 
 function display_help() {
     uecho "$scriptname: Mettre à jour la configuration de l'environnement
@@ -27,10 +29,6 @@ OPTIONS
         nutools."
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS uenv uenv_update ||
-exit 1
-
 parse_opts "${PRETTYOPTS[@]}" \
     --help '$exit_with display_help' \
     -u update \
diff --git a/ufixchars b/ufixchars
index 3e49cad..921373e 100755
--- a/ufixchars
+++ b/ufixchars
@@ -1,6 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
-source "$(dirname "$0")/ulib/ulib" || exit 1; urequire DEFAULTS
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: Enlever ou transformer certaines classes de caractères d'un flux encodé en UTF-8
diff --git a/ugenpass b/ugenpass
index aeba787..c0e6c79 100755
--- a/ugenpass
+++ b/ugenpass
@@ -1,6 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
-source "$(dirname "$0")/ulib/ulib" || exit 1; urequire DEFAULTS password
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS password
 
 function display_help() {
     uecho "$scriptname: générer un mot de passe au hasard
diff --git a/uinc b/uinc
index adb099f..7c088aa 100755
--- a/uinc
+++ b/uinc
@@ -1,9 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
-
-source "$(dirname "$0")/ulib/ulib" &&
-urequire uinc ||
-exit 1
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire uinc
 
 export UINCPATH="$ULIBDIR${UINCPATH:+:$UINCPATH}"
 uinc "$@"
diff --git a/uinc.sh b/uinc.sh
index 4c8d2ae..cce16e4 100755
--- a/uinc.sh
+++ b/uinc.sh
@@ -1,12 +1,9 @@
 #!/bin/sh
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
-
 # Version de uinc qui fonctionne avec /bin/sh. Le contrôle est transmis à
 # bash, qui est recherché dans une liste de répertoires standards
-
-. `dirname "$0"`/ulib/ulibsh &&
-urequire DEFAULTS uinc ||
-exit 1
+. `dirname "$0"`/lib/ulib/ulibsh || exit 1
+urequire DEFAULTS uinc
 
 export UINCPATH="$ULIBDIR${UINCPATH:+:$UINCPATH}"
 uinc "$@"
diff --git a/uinst b/uinst
index 9e47bc2..8401fa3 100755
--- a/uinst
+++ b/uinst
@@ -1,8 +1,6 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
-
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS uinst ||
-exit 1
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS uinst
 
 uinst_nolocal "$@"
diff --git a/uinst.sh b/uinst.sh
index 70423a2..7bf2408 100755
--- a/uinst.sh
+++ b/uinst.sh
@@ -1,11 +1,8 @@
 #!/bin/sh
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
-
 # Version de uinst qui fonctionne avec /bin/sh. Le contrôle est transmis à
 # bash, qui est recherché dans une liste de répertoires standards
-
-. `dirname "$0"`/ulib/ulibsh &&
-urequire DEFAULTS uinst ||
-exit 1
+. `dirname "$0"`/lib/ulib/ulibsh || exit 1
+urequire DEFAULTS uinst
 
 uinst_nolocal "$@"
diff --git a/ujava b/ujava
index 4d24b25..9e5317a 100755
--- a/ujava
+++ b/ujava
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS java
 
 function display_help() {
     uecho "$scriptname: Lancer un script après avoir sélectionné une version de java
@@ -24,10 +26,6 @@ Si args n'est pas spécifié, un shell est lancé dans lequel les variables
 JAVA_HOME, JAVA, JAVAC et PATH sont mis à jour."
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS java ||
-exit 1
-
 bits=
 exact=
 parse_opts + "${PRETTYOPTS[@]}" \
diff --git a/uldap b/uldap
index 6d3bdf0..befeb1d 100755
--- a/uldap
+++ b/uldap
@@ -1,9 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
-
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ldif prefixes ldap ||
-exit 255
+source "$(dirname "$0")/lib/ulib/ulib" || exit 255
+urequire DEFAULTS ldif prefixes ldap
 
 ################################################################################
 # Fonctions utilitaire
diff --git a/ulibshell b/ulibshell
index 57e7613..bf8ac66 100755
--- a/ulibshell
+++ b/ulibshell
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: Lancer un shell après avoir chargé des modules de ulib
@@ -18,10 +20,6 @@ est modifié pour que $scriptdir soit ajouté en premier.
 Les arguments sont passés inchangés au shell."
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-
 parse_opts + "${PRETTYOPTS[@]}" \
     --help '$exit_with display_help' \
     -r: modules \
diff --git a/ulibsync b/ulibsync
index 62fb075..a1de515 100755
--- a/ulibsync
+++ b/ulibsync
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: Copier les librairies ulib et/ou pyulib
@@ -14,10 +16,6 @@ OPTIONS
         Copier pyulib"
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-
 parse_opts "${PRETTYOPTS[@]}" \
     --help '$exit_with display_help' \
     -u,--ulib ulib \
diff --git a/ulibversion b/ulibversion
index 3725057..fe48f80 100755
--- a/ulibversion
+++ b/ulibversion
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: Gestion de la version de ulib
@@ -18,10 +20,6 @@ OPTIONS
         juste tester la version et ne pas afficher le message d'information."
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-
 action=show
 system=
 min_version=
diff --git a/umatch b/umatch
index 48ade6a..af3b7ae 100755
--- a/umatch
+++ b/umatch
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: Afficher le résultat d'une recherche par regexp et compter
@@ -49,10 +51,6 @@ OPTIONS
         une ligne '--'"
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-
 function match() {
     local regexp="$1" sep="$2"
     awkrun ${sep:+FS="$sep"} '{
diff --git a/umirror b/umirror
index 31bce72..024374d 100755
--- a/umirror
+++ b/umirror
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: faire un miroir d'un site web
@@ -12,10 +14,6 @@ OPTIONS
         Convertir les liens pour consultation locale"
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-
 local=
 parse_opts + "${PRETTYOPTS[@]}" \
     --help '$exit_with display_help' \
diff --git a/update-nutools b/update-nutools
index 6ef86ee..41bd5f5 100755
--- a/update-nutools
+++ b/update-nutools
@@ -69,4 +69,5 @@ if [ -n "$clonerepo" ]; then
     cd ..
     rm -rf "$NAME"
 fi
+# IMPORTANT: la ligne suivante ne doit pas se terminer par un retour à la ligne:
 rm "$0"; exit 0
\ No newline at end of file
diff --git a/uprefix b/uprefix
index 69bd0bd..b0ef1a9 100755
--- a/uprefix
+++ b/uprefix
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS PREFIXES-DEFAULTS
 
 function display_help() {
     uecho "$scriptname: Afficher les préfixes valides pour uinst
@@ -16,10 +18,6 @@ OPTIONS
         Afficher la valeur du préfixe spécifié"
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS PREFIXES-DEFAULTS ||
-exit 1
-
 action=expand
 parse_opts "${PRETTYOPTS[@]}" \
     --help '$exit_with display_help' \
diff --git a/uproject b/uproject
index eacb3fb..df58291 100755
--- a/uproject
+++ b/uproject
@@ -138,9 +138,8 @@ if [ "$#" -eq 1 -a "$1" == --nutools-makelinks ]; then
     exit 0
 fi
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS modeline vcs ||
-exit 1
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS modeline vcs
 
 # Traduire le nom du script
 for script_alias in "${SCRIPT_ALIASES[@]}"; do
diff --git a/uscrontab b/uscrontab
index 639c536..a9dbf29 100755
--- a/uscrontab
+++ b/uscrontab
@@ -1,6 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
-source "$(dirname "$0")/ulib/ulib" || exit 1; urequire DEFAULTS crontab
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS crontab
 
 function display_help() {
     uecho "$scriptname: lancer une suite de commande en respectant une planification de type cron
diff --git a/ussh b/ussh
index 0137abe..c5de8af 100755
--- a/ussh
+++ b/ussh
@@ -1,6 +1,6 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
-source "$(dirname "$0")/ulib/ulib" || exit 1
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
 urequire DEFAULTS
 
 function display_help() {
diff --git a/usysinfos b/usysinfos
index 0261fba..740605a 100755
--- a/usysinfos
+++ b/usysinfos
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: Afficher les informations sur le système
@@ -13,10 +15,6 @@ requête. Voir la doc de check_sysinfos() pour le format de la requête.
 Sinon, afficher les informations sur le système courant."
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-
 [ $# -eq 1 -a "$1" == "--help" ] && exit_with display_help
 
 if [ -n "$*" ]; then
diff --git a/utempl b/utempl
index b37df0d..06323de 100755
--- a/utempl
+++ b/utempl
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: Créer un nouveau fichier à partir d'un modèle
@@ -22,10 +24,6 @@ utilisé pour créer le nouveau fichier. Utiliser l'option --help pour
 avoir une description des options disponibles."
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-
 template=
 edit=auto
 overwrite=
diff --git a/utrigger b/utrigger
index cda0ec7..6b83fad 100755
--- a/utrigger
+++ b/utrigger
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire base pretty
 
 function display_help() {
     uecho "$scriptname: lancer une commande en différé
@@ -47,10 +49,6 @@ OPTIONS
         train de tourner, cette option n'a aucun effet."
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire base pretty ||
-exit 1
-
 RUNDELAY=5
 
 function acquire_lock() {
diff --git a/uversion b/uversion
index acb28fb..a0af66f 100755
--- a/uversion
+++ b/uversion
@@ -1,6 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
-source "$(dirname "$0")/ulib/ulib" || exit 1; urequire DEFAULTS semver
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS semver
 
 function display_help() {
     uecho "$scriptname: gérer des numéros de version selon les règles du versionnage sémantique v2.0.0 (http://semver.org/)
diff --git a/vzusage b/vzusage
index 8e6f297..dd34c67 100755
--- a/vzusage
+++ b/vzusage
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: afficher des informations sur une machine virtuelle OpenVZ
@@ -19,10 +21,6 @@ OPTIONS
         beancounters"
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-
 default=1
 bc=
 show_failed=
diff --git a/woArchive b/woArchive
index a190bf3..8723f97 100755
--- a/woArchive
+++ b/woArchive
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: créer une archive de la distribution WebObjects en cours
@@ -15,10 +17,6 @@ OPTIONS
         \$NAME.files"
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-
 name=
 files=
 parse_opts "${PRETTYOPTS[@]}" \
diff --git a/woSwitch b/woSwitch
index 3a2c357..6343612 100755
--- a/woSwitch
+++ b/woSwitch
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 function display_help() {
     uecho "$scriptname: Changer la version de WebObjects pour le système en cours
@@ -27,10 +29,6 @@ Ensuite, les répertoires Applications et Configuration sont restaurés. Il faud
 restaurer Extensions manuellement."
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
-
 nocheck=
 from=
 to=
diff --git a/woctl b/woctl
index 060147b..8561b71 100755
--- a/woctl
+++ b/woctl
@@ -89,9 +89,8 @@ if [ "$#" -eq 1 -a "$1" == --nutools-makelinks ]; then
     exit 0
 fi
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS ||
-exit 1
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS
 
 # Traduire le nom du script
 for script_alias in "${SCRIPT_ALIASES[@]}"; do
diff --git a/woinst b/woinst
index 44e9f18..482b8c6 100755
--- a/woinst
+++ b/woinst
@@ -1,8 +1,6 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
-
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS woinst ||
-exit 1
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS woinst
 
 woinst "$@"
diff --git a/wosign b/wosign
index c5837aa..bcb8488 100755
--- a/wosign
+++ b/wosign
@@ -1,5 +1,7 @@
 #!/bin/bash
 # -*- coding: utf-8 mode: sh -*- vim:sw=4:sts=4:et:ai:si:sta:fenc=utf-8
+source "$(dirname "$0")/lib/ulib/ulib" || exit 1
+urequire DEFAULTS prefixes apache webobjects java wosign
 
 function display_help() {
     uecho "$scriptname: signer les jars d'un bundle
@@ -18,10 +20,6 @@ OPTIONS
         accessible en écriture, relancer le script en root."
 }
 
-source "$(dirname "$0")/ulib/ulib" &&
-urequire DEFAULTS prefixes apache webobjects java wosign ||
-exit 1
-
 sign=
 unsign=
 resign=