Linux常用指令之wall

Linux常用指令之wall

    有時，伺服器被多人使用，但是不知道都有誰在用，這時可以使用linux的指令wall來詢問對方。指令如下：

1

<code>[root@root ~]</code><code># wall hello</code>

向各個terminal發送消息hello。

以下是

[root@root ~]# man wall

關于wall指令的解釋

WALL(1)                       Linux User’s Manual                      WALL(1)

NAME

       wall -- send a message to everybody’s terminal.

SYNOPSIS

       wall [-n] [ message ]

DESCRIPTION

       Wall  sends  a message to everybody logged in with their mesg(1) permission set to yes.  The message can be given as an argument to wall, or it can be sent

       to wall’s standard input.  When using the standard input from a terminal, the message should be terminated with the EOF key (usually Control-D).

       The length of the message is limited to 20 lines.  For every invocation of wall a notification will be written to syslog, with facility LOG_USER and  level

       LOG_INFO.

OPTIONS

       -n     Suppresses  the  normal  banner  printed  by  wall,  changing  it  to "Remote broadcast message".  This option is only available for root if wall is

              installed set-group-id, and is used by rpc.walld(8).

ENVIRONMENT

       Wall ignores the TZ variable - the time printed in the banner is based on the system’s local time.

SEE ALSO

       mesg(1), rpc.rwalld(8).

AUTHOR

       Miquel van Smoorenburg, [email protected]

                                 15 April 2003                         WALL(1)

本文轉自313119992 51CTO部落格，原文連結:http://blog.51cto.com/qiaopeng688/1901545