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BIFF(1) NetBSD General Commands Manual BIFF(1)
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biff -- be notified if mail arrives and who it is from
biff informs the system whether you want to be notified when mail arrives
during the current terminal session.
Options supported by biff:
n Disables notification.
y Enables notification.
When mail notification is enabled, the header and first few lines of the
message will be printed on your screen whenever mail arrives. A ``biff
y'' command is often included in the file .login or .profile to be exe-
cuted at each login.
biff operates asynchronously. For synchronous notification use the MAIL
variable of sh(1) or the mail variable of csh(1).
csh(1), mail(1), sh(1), comsat(8)
The biff command appeared in 4.0BSD.
NetBSD 5.0 June 6, 1993 NetBSD 5.0