Unix is a Four Letter Word: Vi ---> Saving and Quitting

Vi ---> Saving and Quitting


     :w    write to disk
     ZZ    write to disk and exit
     :q!   exit without writing to disk

Actually, the command for quitting vi is :q. You can save and quit by typing :wq but ZZ does the same thing¹ and takes one less keystroke. If there are unsaved changes to the text and you try to quit using :q, vi will warn you that you have unsaved changes and will prevent you from quitting. In order to quit without saving the changes you must use the override switch, !.

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¹ For the purist, :wq and ZZ are not exactly the same. :wq always saves, whereas ZZ saves only if changes have been made since the last save.

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