This command: addgroup --system --quiet ntp
is idempotent on default precise systems, so it's not quite clear why it fails on your system. Maybe it's possible to do some debugging on running that command. ubuntu@ubuntu:~$ cat /etc/issue Ubuntu 12.04.5 LTS \n \l ubuntu@ubuntu:~$ dpkg --list | grep ntp ii ntp 1:4.2.6.p3+dfsg-1ubuntu3.4 Network Time Protocol daemon and utility programs ii ntpdate 1:4.2.6.p3+dfsg-1ubuntu3.4 client for setting system time from NTP servers ubuntu@ubuntu:~$ grep ntp /etc/group ntp:x:112: ubuntu@ubuntu:~$ sudo addgroup --system --quiet ntp; echo $? 0 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1372051 Title: ntp postinst user/group add commands are not idempotent To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ntp/+bug/1372051/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
