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WALL(1)                          User Commands                         WALL(1)

       wall - write a message to all users

       wall [-n] [-t timeout] [message | file]

       wall  displays  a  message, or the contents of a file, or otherwise its
       standard input, on the terminals of all currently logged in users.  The
       command  will  wrap  lines  that  are longer than 79 characters.  Short
       lines are whitespace padded to have 79 characters.   The  command  will
       always put a carriage return and new line at the end of each line.

       Only  the superuser can write on the terminals of users who have chosen
       to deny messages or are using a program which automatically denies mes-

       Reading  from  a  file is refused when the invoker is not superuser and
       the program is suid or sgid.

       -n, --nobanner
              Suppress the banner.

       -t, --timeout timeout
              Abandon the write attempt to the terminals  after  timeout  sec-
              onds.   This  timeout  must  be a positive integer.  The default
              value is 300 seconds, which is a legacy from the time when  peo-
              ple ran terminals over modem lines.

       -V, --version
              Display version information and exit.

       -h, --help
              Display help text and exit.

       Some  sessions,  such  as  wdm,  that  have in the beginning of utmp(5)
       ut_type data a ':' character will not get the message from wall.   This
       is done to avoid write errors.

       mesg(1), talk(1), write(1), shutdown(8)

       A wall command appeared in Version 7 AT&T UNIX.

       The  wall  command  is  part of the util-linux package and is available
       from Linux Kernel  Archive  <

util-linux                        August 2013                          WALL(1)

Czas wygenerowania: 0.00050 sek.

Created with the man page lookup class by Andrew Collington.
Based on a C man page viewer by Vadim Pavlov
Unicode soft-hyphen fix (as used by RedHat) by Dan Edwards
Some optimisations by Eli Argon
Caching idea and code contribution by James Richardson

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