1.\" Copyright (c) 1989, 1990, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" %sccs.include.redist.roff% 5.\" 6.\" @(#)wall.1 8.1 (Berkeley) 06/06/93 7.\" 8.Dd 9.Dt WALL 1 10.Os BSD 4 11.Sh NAME 12.Nm wall 13.Nd write a message to users 14.Sh SYNOPSIS 15.Nm wall 16.Op Ar file 17.Sh DESCRIPTION 18.Nm Wall 19displays the contents of 20.Ar file 21or, by default, its standard input, on the terminals of all 22currently logged in users. 23.Pp 24Only the super-user can write on the 25terminals of users who have chosen 26to deny messages or are using a program which 27automatically denies messages. 28.Sh SEE ALSO 29.Xr mesg 1 , 30.Xr talk 1 , 31.Xr write 1 , 32.Xr shutdown 8 33.Sh HISTORY 34A 35.Nm 36command appeared in 37.At v7 . 38