Linux Shell script programming-cut command

Cut

The cut command can extract text columns from a text file or text stream.

Cut syntax

[Root @ WWW ~] # Cut-D 'delimiter '-F fields <= used to have specific delimiter [root @ WWW ~] # Cut-C character range <= It is used for neatly arranged information options and parameters:-D: followed by separated characters. Used with-F;-F: Splits a piece of information into segments based on the-D separator, and uses-F to get the meaning of the segments;-C: take out a fixed character range in units of characters (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

 

Remove the PATH variable. I want to find the fifth path.

#echo $PATH | cut -d ':' -f 5/usr/local/bin

 

Remove the PATH variable. I want to find the third and fifth paths.

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

 

Remove the PATH variable. I want to find the third to last path.

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

/sbin:/usr/sbin:/usr/local/bin:/usr/X11R6/bin:/usr/games

 

Remove the PATH variable. I want to find the first to third paths.

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

/bin:/usr/bin:/sbin:

 

Remove the PATH variable. I want to find the first, third, and fifth paths.

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/bashdaemon:/bin/shbin:/bin/sh