Wall command in Linux

Posted by linuxize on Oct 7, 2020 11:08 AM EDT
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wall is a command-line utility that displays a message on the terminals of all logged-in users.

Usually, system administrators send messages to announce maintenance and ask users to log out and close all open programs. The messages are shown to all logged-in users with a terminal open. Users using a graphical desktop environment with no terminal open will not see the messages.

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