be notified if mail arrives and who it is from
utility informs the system whether
you want to be notified on your terminal when mail arrives.
Affected is the first terminal associated with the standard input, standard
output or standard error file descriptor, in that order. Thus, it is possible
to use the redirection facilities of a shell to toggle the notification for
other terminals than the one
The following options are available:
- Disable notification.
- Enable header notification.
- Enable bell notification.
When header notification is enabled, the header and first few lines of the
message will be printed on your terminal whenever mail arrives. A “biff
y” command is often included in the file
to be executed at each login.
When bell notification is enabled, only two bell characters (ASCII \007) will be
printed on your terminal whenever mail arrives.
If no arguments are given,
present notification status of the terminal to the standard output.
utility operates asynchronously. For
synchronous notification use the
or the mail
utility exits with one of the
- Notification was enabled at the time of invocation.
- Notification was disabled at the time of invocation.
- An error occurred.
Previous versions of the
affected the terminal attached to standard error without first trying the
standard input or output devices.
command appeared in
. It was named after the dog of Heidi Stettner.
He died in August 1993, at 15.