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Today, the editor will share with you the relevant knowledge points about how to use the sed command in Linux. The content is detailed and the logic is clear. I believe most people still know too much about this knowledge, so share this article for your reference. I hope you can get something after reading this article.

Sed is an online editor that processes one line of content at a time. When processing, the currently processed line is stored in a temporary buffer, called "pattern space" (pattern space), and then the contents of the buffer are processed with the sed command, and when the processing is completed, the contents of the buffer are sent to the screen.

List the contents of / etc/passwd and print the line number, and delete line 2-5!

[root@www ~] # nl / etc/passwd | sed'2 root:x:0:0:root:/root:/bin/bash6 sync:x:5:0:sync:/sbin:/bin/sync7 shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown. (omitted later).

Just delete line 2.

Nl / etc/passwd | sed '2d'

To delete the third to last lines

Nl / etc/passwd | sed '3d`

Well, if it's before the second line,

Nl / etc/passwd | sed'2i drink tea' and above are all the contents of this article entitled "how to use sed commands in Linux". Thank you for reading! I believe you will gain a lot after reading this article. The editor will update different knowledge for you every day. If you want to learn more knowledge, please pay attention to the industry information channel.

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