dieter@ubuntu-12:~$ grep 46 /etc/group
plugdev:x:46:dieter
dieter@ubuntu-12:~$ uname -a
Linux ubuntu-12 3.2.0-45-generic #70-Ubuntu SMP Wed May 29 20:12:06 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
dieter@ubuntu-12:~$