4.3BSD-Tahoe/usr/man/cat1/wall.0

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



NNAAMMEE
     wall - write to all users

SSYYNNOOPPSSIISS
     wwaallll

DDEESSCCRRIIPPTTIIOONN
     _W_a_l_l reads its standard input until an end-of-file.  It then
     sends this message, preceded by `Broadcast Message ...', to
     all logged in users.

     The sender should be super-user to override any protections
     the users may have invoked.

FFIILLEESS
     /dev/tty?
     /etc/utmp

SSEEEE AALLSSOO
     mesg(1), write(1)

DDIIAAGGNNOOSSTTIICCSS
     `Cannot send to ...' when the open on a user's tty file
     fails.































Printed 7/9/88		 April 29, 1985                         1