Linux - cut

yuechaotian

[dwapp@dw_testdb ~]$ who
dwapp    pts/0        Jun 23 20:46 (101.15.16.7)
dwapp    pts/2        Jun 23 16:38 (101.15.13.6)
dwapp    pts/6        Jun 22 10:02 (101.15.17.2)
dwapp    pts/7        Jun 23 17:48 (101.15.16.8)
dwapp    pts/8        Jun 22 10:16 (101.15.17.3)
dwapp    pts/9        Jun 23 11:11 (101.15.16.34)
root     pts/11       Jun 22 10:58 (101.15.16.33)
root     pts/12       Jun 22 11:00 (101.15.16.32)
dwapp    pts/13       Jun 23 11:11 (101.15.16.31)
dwapp    pts/14       Jun 23 11:23 (101.15.16.24)
[color="#800080"]#使用 -c，取第一个字符
[dwapp@dw_testdb ~]$ who|cut -c1
d
d
d
d
d
d
r
r
d
d
[color="#800080"]#使用 -c，取1-5个字符
[dwapp@dw_testdb ~]$ who|cut -c1-5
dwapp
dwapp
dwapp
dwapp
dwapp
dwapp
root
root
dwapp
dwapp
[color="#800080"]#使用 -c，取6-最后个字符
[dwapp@dw_testdb ~]$ who|cut -c6-
   pts/0        Jun 23 20:46 (101.15.16.7)
   pts/2        Jun 23 16:38 (101.15.13.6)
   pts/6        Jun 22 10:02 (101.15.17.2)
   pts/7        Jun 23 17:48 (101.15.16.8)
   pts/8        Jun 22 10:16 (101.15.17.3)
   pts/9        Jun 23 11:11 (101.15.16.34)
   pts/11       Jun 22 10:58 (101.15.16.33)
   pts/12       Jun 22 11:00 (101.15.16.32)
   pts/13       Jun 23 11:11 (101.15.16.31)
   pts/14       Jun 23 11:23 (101.15.16.24)
[color="#800080"]#使用 -c，取1-5个字符，和35-最后个字符
[dwapp@dw_testdb ~]$ who|cut -c1-5,35-
dwapp (101.15.16.7)
dwapp (101.15.13.6)
dwapp (101.15.17.2)
dwapp (101.15.16.8)
dwapp (101.15.17.3)
dwapp (101.15.16.34)
root  (101.15.16.33)
root  (101.15.16.32)
dwapp (101.15.16.31)
dwapp (101.15.16.24)
[color="#800080"]# 使用 -d 和 -f
[dwapp@dw_testdb yuechaotian]$ cat passwd
root:x:0:0:root:/root:/bin/bash
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
operator:x:11:0:operator:/root:/sbin/nologin
gopher:x:13:30:gopher:/var/gopher:/sbin/nologin
[dwapp@dw_testdb yuechaotian]$ cat passwd|cut -d: -f1,7
root:/bin/bash
lp:/sbin/nologin
sync:/bin/sync
shutdown:/sbin/shutdown
halt:/sbin/halt
operator:/sbin/nologin
gopher:/sbin/nologin

[color="#800080"]#也可以输入文件
[dwapp@dw_testdb yuechaotian]$ cut -d: -f1,7 ./passwd
root:/bin/bash
lp:/sbin/nologin
sync:/bin/sync
shutdown:/sbin/shutdown
halt:/sbin/halt
operator:/sbin/nologin
gopher:/sbin/nologin

[color="#800080"]#-d默认为制表符
[dwapp@dw_testdb yuechaotian]$ cat score
yuechaotian     80
oratea  79
yuexingtian     90
hot_dog 89
[dwapp@dw_testdb yuechaotian]$ cut -f2 score
80
79
90
89
               
               
               
               

本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u/30637/showart_1975403.html