[root@redhat ~]# cut -d: -f1 /etc/passwd #-d:表示以:作为分隔符，-f1表示取第一列
root
bin
daemon
adm
lp
sync
shutdown
halt
mail
news
uucp
operator
games
gopher
ftp
nobody
nscd
vcsa
rpc
mailnull
smmsp
pcap
ntp
dbus
avahi
sshd
rpcuser
nfsnobody
haldaemon
avahi-autoipd
distcache
apache
oprofile
webalizer
squid
xfs
gdm
sabayon
cms
oracle
talkweb
[root@redhat ~]# cut -c1-3 /etc/passwd --取第一到第三个字符
roo
bin
dae
adm
lp:
syn
shu
hal
mai
new
uuc
ope
gam
gop
ftp
nob
nsc
vcs
rpc
mai
smm
pca
ntp
dbu
ava
ssh
rpc
nfs
hal
ava
dis
apa
opr
web
squ
xfs
gdm
sab
cms
ora
tal
[root@redhat ~]# cut -d: -f1-3 /etc/passwd #取第一到第三列
root:x:0
bin:x:1
daemon:x:2
adm:x:3
lp:x:4
sync:x:5
shutdown:x:6
halt:x:7
mail:x:8
news:x:9
uucp:x:10
operator:x:11
games:x:12
gopher:x:13
ftp:x:14
nobody:x:99
nscd:x:28
vcsa:x:69
rpc:x:32
mailnull:x:47
smmsp:x:51
pcap:x:77
ntp:x:38
dbus:x:81
avahi:x:70
sshd:x:74
rpcuser:x:29
nfsnobody:x:65534
haldaemon:x:68
avahi-autoipd:x:100
distcache:x:94
apache:x:48
oprofile:x:16
webalizer:x:67
squid:x:23
xfs:x:43
gdm:x:42
sabayon:x:86
cms:x:500
oracle:x:501
talkweb:x:502
[root@redhat ~]# cut -d: -f3 /etc/passwd | sort #将第三列取出，并排序
0
1
10
100
11
12
13
14
16
2
23
28
29
3
32
38
4
42
43
47
48
5
500
501
502
51
6
65534
67
68
69
7
70
74
77
8
81
86
9
94
99
[root@redhat ~]# cut -d: -f3 /etc/passwd | sort -n #取出第三列，并按数据大小排序，与上面不同
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
16
23
28
29
32
38
42
43
47
48
51
67
68
69
70
74
77
81
86
94
99
100
500
501
502
65534
[root@redhat ~]# sort -t: -k3 -n /etc/passwd #sort命令与cut不同的是，分隔符的参数是-t而不是-d 同样按照第几列安排不是cut命令的 -fN而是 -kN
root:x:0:0:root:/root:/bin/bash
bin:x:1:1:bin:/bin:/sbin/nologin
daemon:x:2:2:daemon:/sbin:/sbin/nologin
adm:x:3:4:adm:/var/adm:/sbin/nologin
lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin
sync:x:5:0:sync:/sbin:/bin/sync
shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown
halt:x:7:0:halt:/sbin:/sbin/halt
mail:x:8:12:mail:/var/spool/mail:/sbin/nologin
news:x:9:13:news:/etc/news:
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
squid:x:23:23::/var/spool/squid:/sbin/nologin
nscd:x:28:28:NSCD Daemon:/:/sbin/nologin
rpcuser:x:29:29:RPC Service User:/var/lib/nfs:/sbin/nologin
rpc:x:32:32:Portmapper RPC user:/:/sbin/nologin
ntp:x:38:38::/etc/ntp:/sbin/nologin
gdm:x:42:42::/var/gdm:/sbin/nologin
xfs:x:43:43:X Font Server:/etc/X11/fs:/sbin/nologin
mailnull:x:47:47::/var/spool/mqueue:/sbin/nologin
apache:x:48:48:Apache:/var/www:/sbin/nologin
smmsp:x:51:51::/var/spool/mqueue:/sbin/nologin
webalizer:x:67:67:Webalizer:/var/www/usage:/sbin/nologin
haldaemon:x:68:68:HAL daemon:/:/sbin/nologin
vcsa:x:69:69:virtual console memory owner:/dev:/sbin/nologin
avahi:x:70:70:Avahi daemon:/:/sbin/nologin
sshd:x:74:74:Privilege-separated SSH:/var/empty/sshd:/sbin/nologin
pcap:x:77:77::/var/arpwatch:/sbin/nologin
dbus:x:81:81:System message bus:/:/sbin/nologin
sabayon:x:86:86:Sabayon user:/home/sabayon:/sbin/nologin
distcache:x:94:94:Distcache:/:/sbin/nologin
nobody:x:99:99:Nobody:/:/sbin/nologin
avahi-autoipd:x:100:101:avahi-autoipd:/var/lib/avahi-autoipd:/sbin/nologin
cms:x:500:500::/home/cms:/bin/bash
oracle:x:501:501::/home/oracle:/bin/bash
talkweb:x:502:503::/home/talkweb:/bin/bash
nfsnobody:x:65534:65534:Anonymous NFS User:/var/lib/nfs:/sbin/nologin
[root@redhat ~]#
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