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First open the command console to find the file you want to edit, execute the command ls to see how many files there are below, I have an index.php file below this

Then execute vi index.php

At this time if you want to modify the contents of this file, press the keyboard on the 'i' key, the bottom will become INSERT, you can modify the

Write an echo code to save Esc+:+wq this is save, enter save

After saving, open the file again and you will find that the code you just wrote has been saved into it.

Do not save command Esc+:+q! This is not preserved.

The above is how to modify and save files in linux details, more please pay attention to other related articles!

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