Linux常用命令之wall

Linux常用命令之wall

    有时，服务器被多人使用，但是不知道都有谁在用，这时可以使用linux的命令wall来询问对方。命令如下：

[root@root ~]# wall hello

向各个terminal发送消息hello。

以下是

[root@root ~]# man wall

关于wall命令的解释

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, [e-mail]

                                 15 April 2003                         WALL(1)