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The writings on the wall

January 5, 2011

The wall is a useful command used to broadcast a message to all users currently logged on to the system. The wall command can be used for instance if you need to notify all users currently logged in that the system will be going down for maintenance and that they should save their important documents and log off. e.g: –

prompt> wall ### hit return and then you can start typing your message

please note that thy system will go down for routine maintenance at 21:00 hours, please save any important documents and log off before 21:00 hours as those that do not will be logged off automatically!            ### Once you are happy with your message press Ctrl+d on your keyboard to broadcast the message to all users currently logged on to the system

 

Broadcast Message from user@hostname

(/dev/pts/0) at 21:15 …

 

please note that thy system will go down for routine maintenance at 21:00 hours

, please save any important documents and log off before 21:00 hours as those t

hat do not will be logged off automatically!

 

Summary

Quite simply really but a very useful command

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From → Linux

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