wall

Output information to all currently open terminals on the system

Supplementary instructions

wall command is used to output information to all currently open terminals in the system. The wall command can send information to each terminal user who agrees to receive public information. If the information content is not given, the wall command will read the data from the standard input device and then transmit the obtained data to all terminals. user.

grammar

wall(parameter)

Parameters

Message: Specify the broadcast message.

Example

[root@localhost ~]# wall this is a test line

Broadcast message from root (pts/1) (Fri Dec 20 11:36:51 2013):

this is a test line