rwall(1Mtcp)

rwall -- write to all users over a network

Synopsis

/usr/sbin/rwall hostname . . .

Description

The rwall command reads a message from standard input until EOF. It then sends this message, preceded by the line:

   Broadcast Message ...

to all users logged in on the specified host machines.

Usage

A machine can only receive rwall messages if it is running rwalld(1Mtcp). rwalld may be started by inetd(1Mtcp) or listen(1M).

Note that the timeout is fairly short to allow transmission to a large group of machines (some of which may be down) in a reasonable amount of time. Thus the message may not get through to a heavily loaded machine.

References

inetd(1Mtcp), listen(1M), pmadm(1M), rwalld(1Mtcp), sacadm(1M), wall(1M)