cli-sedHow can I use CLI sed to edit a file?

The sed command line utility can be used to edit files. It is a powerful tool for performing text transformations. To use sed, you must provide a command line argument with the desired transformation.

For example, to replace all occurrences of the word "foo" with "bar", you could use the following command:

sed 's/foo/bar/g' myfile.txt

This command would replace all occurrences of "foo" with "bar" in the file myfile.txt.

You can also use sed to delete lines from a file. For example, to delete all lines containing the word "foo", you could use the following command:

sed '/foo/d' myfile.txt

This command would delete all lines containing the word "foo" from the file myfile.txt.

You can also use sed to insert lines into a file. For example, to insert a line containing the word "foo" after the line containing the word "bar", you could use the following command:

sed '/bar/a\foo' myfile.txt

This command would insert the line "foo" after the line containing the word "bar" in the file myfile.txt.

The sed utility is very powerful and can be used to perform a variety of text transformations. For more information, see the following links:

• GNU sed Manual
• sed Tutorial
• sed - An Introduction and Tutorial

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