NAME

rwall − write to all users over a network (RPC version) (NFS only)

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(5).

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

FILES

/etc/inetd.conf

SEE ALSO

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

BUGS

The timeout is fairly short so that rwall can 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. 

Broadcasting does not work through gateways. 

PRPQs 5799-WZQ/5799-PFF: IBM/4.3  —  Setp 1988