examples for /etc/sudoers

root	ALL=(ALL)	ALL

# allows Gerd to mount all partitions
# does not work with sda1 (Memostick)
gerd	ALL = /bin/umount *, /bin/mount * 

# allows Knoppix to start commands like root, dangerous!
knoppix	ALL=NOPASSWD:	ALL

# Members of the truecrypt group are allowed to invoke truecrypt
%truecrypt ALL=(ALL) ALL

# Members of the admin group may gain root privileges
%admin ALL=(ALL) ALL