WALL(1M) WALL(1M)
NAME
wall - write to all users
SYNOPSIS
/etc/wall
DESCRIPTION
Wall reads its standard input until an end-of-file. It then sends this
message, preceded by `Broadcast Message ...', to all logged in users.
The sender should be super-user to override any protections the users
may have invoked.
FILES
/dev/tty?
/etc/utmp
SEE ALSO
mesg(1), write(1)
DIAGNOSTICS
`Cannot send to ...' when the open on a user's tty file fails.
WALL(1M)
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