Om du skriver så : cat /etc/passwd den ska se så här!
root

0:0:root:/root:/bin/bash
daemon

1:1:daemon:/usr/sbin:/bin/sh
bin

2:2:bin:/bin:/bin/sh
sys

3:3:sys:/dev:/bin/sh
sync

4:65534:sync:/bin:/bin/sync
games

5:60:games:/usr/games:/bin/sh
man

6:12

/var/cache/man:/bin/sh
lp

7:7:lp:/var/spool/lpd:/bin/sh
mail

8:8:mail:/var/mail:/bin/sh
news

9:9:news:/var/spool/news:/bin/sh
uucp

10:10:uucp:/var/spool/uucp:/bin/sh
proxy

13:13:proxy:/bin:/bin/sh
www-data

33:33:www-data:/var/www:/bin/sh
backup

34:34:backup:/var/backups:/bin/sh
list

38:38:Mailing List Manager:/var/list:/bin/sh
irc

39:39:ircd:/var/run/ircd:/bin/sh
gnats

41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/bin/sh
nobody

65534:65534:nobody:/nonexistent:/bin/sh
dhcp

101:101::/nonexistent:/bin/false
syslog

102:102::/home/syslog:/bin/false
klog

103:103::/home/klog:/bin/false
cupsys

100:106::/home/cupsys:/bin/false
messagebus

104:107::/var/run/dbus:/bin/false
haldaemon

108:108:Hardware abstraction layer,,,:/var/run/hal:/bin/false
hplip

105:7:HPLIP system user,,,:/var/run/hplip:/bin/false
kubuntu

1000

kubuntu,,,:/home/kubuntu:/bin/bash
gdm

106:112:Gnome Display Manager:/var/lib/gdm:/bin/false