username:password:uid:gid:gcos_field:home_directory:login_shell
Required Fields:
root:bDPu/ys5PBoYU:0:1:Operator:/:/bin/csh dave:Qs5I6pBb2rJDA:1234:12:David:/u/dave:/bin/csh dan:MNRWDsW/srMfE:2345:23:Dan:: jim:HNRyuuiuMFerx:::::
root::0:1:Operator:/:/bin/csh dave::1234:12:David:/u/dave:/bin/csh dan::2345:23:Dan:: jim::::::