diff --git a/Makefile b/Makefile
index 0bdb5d9..87371d7 100644
--- a/Makefile
+++ b/Makefile
@@ -24,6 +24,7 @@ dist:
 		$(PACKAGE)-$(VERSION)/src/Makefile \
 		$(PACKAGE)-$(VERSION)/src/deforaos-build.sh \
 		$(PACKAGE)-$(VERSION)/src/deforaos-document.sh \
+		$(PACKAGE)-$(VERSION)/src/deforaos-lock.sh \
 		$(PACKAGE)-$(VERSION)/src/deforaos-package.sh \
 		$(PACKAGE)-$(VERSION)/src/deforaos-release.sh \
 		$(PACKAGE)-$(VERSION)/src/deforaos-update.sh \
diff --git a/src/Makefile b/src/Makefile
index ae300a3..ff6af40 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -17,6 +17,8 @@ install:
 	$(MKDIR) $(DESTDIR)$(PREFIX)/bin
 	$(INSTALL) -m 0755 deforaos-document.sh $(DESTDIR)$(PREFIX)/bin/deforaos-document.sh
 	$(MKDIR) $(DESTDIR)$(PREFIX)/bin
+	$(INSTALL) -m 0755 deforaos-lock.sh $(DESTDIR)$(PREFIX)/bin/deforaos-lock.sh
+	$(MKDIR) $(DESTDIR)$(PREFIX)/bin
 	$(INSTALL) -m 0755 deforaos-package.sh $(DESTDIR)$(PREFIX)/bin/deforaos-package.sh
 	$(MKDIR) $(DESTDIR)$(PREFIX)/bin
 	$(INSTALL) -m 0755 deforaos-release.sh $(DESTDIR)$(PREFIX)/bin/deforaos-release.sh
@@ -26,6 +28,7 @@ install:
 uninstall:
 	$(RM) -- $(DESTDIR)$(PREFIX)/bin/deforaos-build.sh
 	$(RM) -- $(DESTDIR)$(PREFIX)/bin/deforaos-document.sh
+	$(RM) -- $(DESTDIR)$(PREFIX)/bin/deforaos-lock.sh
 	$(RM) -- $(DESTDIR)$(PREFIX)/bin/deforaos-package.sh
 	$(RM) -- $(DESTDIR)$(PREFIX)/bin/deforaos-release.sh
 	$(RM) -- $(DESTDIR)$(PREFIX)/bin/deforaos-update.sh
diff --git a/src/deforaos-lock.sh b/src/deforaos-lock.sh
new file mode 100755
index 0000000..3d5b611
--- /dev/null
+++ b/src/deforaos-lock.sh
@@ -0,0 +1,65 @@
+#!/bin/sh
+#$Id$
+#Copyright (c) 2014 Pierre Pronchery <khorben@defora.org>
+#This file is part of DeforaOS Devel scripts
+#This program is free software: you can redistribute it and/or modify
+#it under the terms of the GNU General Public License as published by
+#the Free Software Foundation, version 3 of the License.
+#
+#This program is distributed in the hope that it will be useful,
+#but WITHOUT ANY WARRANTY; without even the implied warranty of
+#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#GNU General Public License for more details.
+#
+#You should have received a copy of the GNU General Public License
+#along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+
+#variables
+#executables
+LOCK="mkdir"
+UNLOCK="rmdir"
+
+
+#functions
+#lock
+_lock()
+{
+	lockfile="/var/tmp/deforaos-lock.$1"
+
+	$LOCK -- "$lockfile"					|| return 2
+	"$@"
+	ret=$?
+	$UNLOCK -- "$lockfile"
+	return $ret
+}
+
+
+#usage
+_usage()
+{
+	echo "Usage: deforaos-lock.sh -- command [arguments...]" 1>&2
+	return 1
+}
+
+
+#main
+#parse the arguments
+while getopts "" name; do
+	case $name in
+		*)
+			_usage
+			exit $?
+			;;
+	esac
+done
+
+#check the usage
+shift $(($OPTIND - 1))
+if [ $# -eq 0 ]; then
+	_usage
+	exit $?
+fi
+
+_lock "$@"
diff --git a/src/project.conf b/src/project.conf
index 80c2058..147c123 100644
--- a/src/project.conf
+++ b/src/project.conf
@@ -1,4 +1,4 @@
-dist=Makefile,deforaos-build.sh,deforaos-document.sh,deforaos-package.sh,deforaos-release.sh,deforaos-update.sh
+dist=Makefile,deforaos-build.sh,deforaos-document.sh,deforaos-lock.sh,deforaos-package.sh,deforaos-release.sh,deforaos-update.sh
 
 [deforaos-build.sh]
 install=$(PREFIX)/bin
@@ -8,6 +8,10 @@ mode=0755
 install=$(PREFIX)/bin
 mode=0755
 
+[deforaos-lock.sh]
+install=$(PREFIX)/bin
+mode=0755
+
 [deforaos-package.sh]
 install=$(PREFIX)/bin
 mode=0755