WALL(C) XENIX System V WALL(C)
Name
wall - Writes to all users.
Syntax
/etc/wall
Description
wall reads a message from the standard input until an end-
of-file. It then sends this message to all users currently
logged in preceded by ``Broadcast Message from ...''. wall
is used to warn all users, for example, prior to shutting
down the system.
The sender should be super-user to override any protections
the users may have invoked.
Files
/dev/tty*
See Also
mesg(C), write(C)
Diagnostics
Cannot send to ... The open on a user's tty file has
failed.
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