4.3BSD-UWisc/man/cat1/rwall.1

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RWALL(1)            UNIX Programmer's Manual             RWALL(1)



NAME
     rwall - write to all users over a network

SYNOPSIS
     rwall host1 host2 ...
     rwall -n netgroup1 netgroup2 ...
     rwall -h host -n netgroup

DESCRIPTION
     _R_w_a_l_l 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 _n_e_t_g_r_o_u_p(5).

     A machine can only receive such a message if it is running
     _r_w_a_l_l_d(8), which is normally started up from /_e_t_c/_s_e_r_v_e_r_s by
     the daemon _i_n_e_t_d(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.

























Printed 12/27/86         1 February 1985                        1