root:NONE:0:root
other:NONE:1:daemon,lp
bin:NONE:2:root,bin,daemon
sys:NONE:3:root,bin,sys,adm
adm:NONE:4:root,adm,daemon
mail:NONE:6:root,uucp,nuucp,uucpadm
users:NONE:100:tutor,install
