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Example of changing content 123 in one file to 456 in Linux

Source: Internet
Author: User
Keywords Linux
Tags content example file linux modified nginx nginx.conf root
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Today we are going to introduce Linux to the example of 123 to 456 in a file, this method is more widely used, especially for the contents of the file changes, the following is a detailed understanding of the two methods of modification:

Modify Method 1

#sed ' s/123/456/g ' file.txt > File.txt.new

#mv-F file.txt.new file.txt

Example：

[root@localhost conf]# sed ' s/123/456/g ' nginx.conf > Nginx.conf.new
[Root@localhost conf]# mv-f nginx.conf.new nginx.conf

Modify Method 2

Make modifications through the Find string feature in the VI editor

[Root@localhost conf]# VI nginx.conf

Enter command:

:%s/123/456/g

: Wq

After you save the exit.

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