biff command in Linux

biff is a mail notification system for unix that notifies the user at the command line when new mail arrives and tells from whom it is.


biff [ y | n ]


  • Y : This option is to enable the mail notification.
  • N : This option is to disable the mail notification.


  • When mail notification is enabled, the header and first few lines of the message will be printed on your screen whenever mail arrives. To enable the notifications you have to pass this command:
    biff y
  • Biff operates asynchronously via the comsat service. If that service is not enabled, biff will not do anything.

My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using or mail your article to See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.

Article Tags :

Be the First to upvote.

Please write to us at to report any issue with the above content.