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This article mainly explains "how linux replaces file content", the explanation content in the article is simple and clear, easy to learn and understand, please follow the idea of Xiaobian slowly in-depth, together to study and learn "how linux replaces file content"!

In linux, you can replace file contents with the sed command, which is used to process text files with scripts. When the parameter is set to "-i", you can replace the specified file contents with the syntax "sed -i 's/replaced contents/replaced contents/' file name".

Operating environment: Linux 7.3 system, Dell G3 computer.

How Linux replaces file content

To replace the contents of a file

sed -i 's/what to replace/what to replace/' file

Extended knowledge:

To replace the contents of a file, copy it first and then replace it, so as not to replace it incorrectly.

sed 's/what is replaced/what is to be replaced/g' file > file.outmv file.out file

Batch find and replace the contents of files in the current folder

sed -i "s/text to be found/text replaced/g" `grep -rl "text to be found" ./`

Batch find and replace file contents under any folder

sed -i "s/text to be found/text replaced/g" `grep -rl "text to be found" /any folder`

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