Le fichier /etc/sudoers
# /etc/sudoers
#
# This file MUST be edited with the 'visudo' command as root.
#
# See the man page for details on how to write a sudoers file.
#
Defaults env_reset
# Uncomment to allow members of group sudo to not need a password
# %sudo ALL=NOPASSWD: ALL
# Host alias specification
# User alias specification
User_Alias APT=user1
# Cmnd alias specification
Cmnd_Alias DEBIAN_TOOLS = /usr/bin/aptitude, /usr/bin/apt-get, /usr/bin/auto-apt, \
/usr/bin/dpkg, /usr/bin/dselect, /usr/sbin/synaptic
# User privilege specification
root ALL=(ALL) ALL
user1 ALL=(ALL) NOPASSWD: /usr/sbin/xfsm-shutdown-helper
APT ALL=NOPASSWD: DEBIAN_TOOLS