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Command: wall | Section: 8 | Source: UNIX v10 | File: wall.8
WALL(8) System Manager's Manual WALL(8)
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
SEE ALSO
write(1)
DIAGNOSTICS
`Cannot send to ...' when the open on a user's tty file fails.
WALL(8)