Search and replace in multiple files using vim

Search and replace in multiple files using vim – (source Stack Overflow)

It is as simple as

Use:

:set aw
:argdo %s/happy999/happy111/g

The first line sets auto-write mode, so when you switch between files, vim will write the file if it has changed.

The second line does your global search and replace.

Note that it doesn’t use wq! since that exits. If you don’t want to use auto-write, then you could use:

:argdo %s/happy999/happy111/g | w

This avoids terminating vim at the end of editing the first file.