Linux Shell script Programming--cut command __HTML5

Cut-and

The Cut command extracts text columns from a text file or text stream.

Cut syntax

[root@www ~]# cut-d ' delimited character '-f fields <== used with specific separator characters
[root@www ~]# cut-c character interval            <== for neat information
options and Parameters:-
D  : followed by a separator character. Used in conjunction with-
F  : Splits a piece of information into several paragraphs with-D, using-F to remove the meaning of paragraph,-
C  : The fixed character interval is taken out of the unit of character (characters);

The PATH variable is as follows

[Root@www ~]# echo $PATH
/bin:/usr/bin:/sbin:/usr/sbin:/usr/local/bin:/usr/x11r6/bin:/usr/games
# 1 | 2       | 3   | 4       | 5            | 6            | 7

Take the path variable out and I'll find the fifth path.

#echo $PATH | Cut-d ': '-F 5
/usr/local/bin

Take the path variable out and I'll find the third and fifth paths.

#echo $PATH | Cut-d ': '-F 3,5
/sbin:/usr/local/bin

Take the path variable out and I'm going to find the third to the last path.

echo $PATH | Cut-d ': '-f 3-

/sbin:/usr/sbin:/usr/local/bin:/usr/x11r6/bin:/usr/games

Take the path variable out and I'm going to find the first to the third path.

#echo $PATH | Cut-d ': '-f 1-3

/bin:/usr/bin:/sbin:

Take the path variable out, I'm going to find the first to third, and the fifth path.

echo $PATH | Cut-d ': '-f 1-3,5

/bin:/usr/bin:/sbin:/usr/local/bin

Practical example: Show only the/etc/passwd user and Shell

#cat/etc/passwd | Cut-d ': ' F 1,7 
root:/bin/bash
daemon:/bin/sh
bin:/bin/sh

Source: http://www.cnblogs.com/zwgblog/p/6006102.html