NAME

rwall − write to all users over a network

SYNOPSIS

rwall hostname ...
rwall −n netgroup ...
rwall −h host −n netgroup

DESCRIPTION

rwall reads a message from standard input until end-of-file.  It then sends this message, preceded by the line:

Broadcast Message ... 

to all users logged in on the specified host machines.  With the −n option, it sends to the specified network groups, which are defined in netgroup(4).

A machine can only receive such a message if it is running rwalld(1M), which is normally started up by the daemon inetd(1M).

SEE ALSO

rwalld(1M), netgroup(4). 
wall(1) in the INTERACTIVE UNIX System User’s/System Administrator’s Reference Manual. 
inetd(1M) in the INTERACTIVE TCP/IP Guide.

BUGS

The timeout is fairly short in order to be able to send 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. 

\*U  —  Version 1.0