NAME

rwall − write to all users over a network

SYNOPSIS

rwall host1 host2 ... 
rwall −n netgroup1 netgroup2 ... 
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(5).

A machine can only receive such a message if it is running rwalld(8), which is normally started up from /etc/servers by the daemon inetd(8).

FILES

/etc/servers

SEE ALSO

wall(1), netgroup(5), rwalld(8), shutdown(8)

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 thru to a heavily loaded machine. 

Sun Release 3.2  —  Last change: 1 February 1985