BSD 4_3_Tahoe development

[unix-history] / usr / man / cat1 / wall.0

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



N\bNA\bAM\bME\bE
    wall - write to all users

S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS
    w\bwa\bal\bll\bl

D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN
    _\bW_\ba_\bl_\bl 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.

F\bFI\bIL\bLE\bES\bS
    /dev/tty?
    /etc/utmp

S\bSE\bEE\bE A\bAL\bLS\bSO\bO
    mesg(1), write(1)

D\bDI\bIA\bAG\bGN\bNO\bOS\bST\bTI\bIC\bCS\bS
    `Cannot send to ...' when the open on a user's tty file
    fails.































Printed 7/9/88           April 29, 1985                         1