sort -t ":" -k 3,3 /etc/passwd

root:x:0:0:root:/root:/bin/bash

bin:x:1:1:bin:/bin:/sbin/nologin

uucp:x:10:14:uucp:/var/spool/uucp:/sbin/nologin

operator:x:11:0:operator:/root:/sbin/nologin

games:x:12:100:games:/usr/games:/sbin/nologin

gopher:x:13:30:gopher:/var/gopher:/sbin/nologin

ftp:x:14:50:FTP User:/var/ftp:/sbin/nologin

oprofile:x:16:16:Special user account to be used by OProfile:/home/oprofile:/sbin/nologin

abrt:x:173:173::/etc/abrt:/sbin/nologin

daemon:x:2:2:daemon:/sbin:/sbin/nologin

rpcuser:x:29:29:RPC Service User:/var/lib/nfs:/sbin/nologin

adm:x:3:4:adm:/var/adm:/sbin/nologin

rpc:x:32:32:Rpcbind Daemon:/var/lib/rpcbind:/sbin/nologin

ntp:x:38:38::/etc/ntp:/sbin/nologin

lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin

saslauth:x:499:76:Saslauthd user:/var/empty/saslauth:/sbin/nologin

sync:x:5:0:sync:/sbin:/bin/sync

chenyc:x:500:500::/home/chenyc:/bin/bash

zengwd:x:501:500::/home/zengwd:/bin/bash

shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown

nfsnobody:x:65534:65534:Anonymous NFS User:/var/lib/nfs:/sbin/nologin

haldaemon:x:68:68:HAL daemon:/:/sbin/nologin

vcsa:x:69:69:virtual console memory owner:/dev:/sbin/nologin

halt:x:7:0:halt:/sbin:/sbin/halt

tcpdump:x:72:72::/:/sbin/nologin

sshd:x:74:74:Privilege-separated SSH:/var/empty/sshd:/sbin/nologin

mail:x:8:12:mail:/var/spool/mail:/sbin/nologin

dbus:x:81:81:System message bus:/:/sbin/nologin

postfix:x:89:89::/var/spool/postfix:/sbin/nologin

nobody:x:99:99:Nobody:/:/sbin/nologin