links: 010 Vim MOC
Command Mode
Command mode has a variety of commands and can do things that normal mode can’t do easily. To enter command mode type : from normal mode and then type your command which should appear at the bottom of the window.
:%s/foo/bar/g- to replace all ‘foo’ with ‘bar’
Vim has a number of other methods that you can read about in the help documentation, :h