NAME

wall − write to all users logged in

SYNOPSIS

wall [ −a ] [ filename ]

DESCRIPTION

wall reads the standard input until an EOF.  It then sends this message, preceded by ‘Broadcast Message ...’, to all logged in users.  If filename is given, then the message is read in from that file.  Normally, pseudo-terminals that do not correspond to rlogin sessions are ignored.  Thus when in sunview(1), the message appears only on the console window.  However, −a will send the message even to such pseudo-terminals. 

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

FILES

/dev/tty? 

/etc/utmp

SEE ALSO

mesg(1), sunview(1), write(1)

Sun Release 4.0  —  Last change: 9 September 1987