Message ALL users before shutdown

Question

How can I send a message to other users via CMD when I'm on Windows 2008 server?

I usually do shutdown -r -t 30, but how can I add a text to this command?

A key skill for a sysadmin is learning to read documentation. For something basic like this it should be the first place to look. Unsurprisingly the windows and 'Unix' documentation tell you how to do this. — user9517, Mar 14, 2014 at 7:11

HostBits · Accepted Answer · 2014-03-13 13:37:54Z

20

shutdown -r -t 30 -c "This system is shutting down in 30 seconds.."

The -c "text" will add a comment to the display window notifying other users of the shutdown.

For Unix, the syntax would be shutdown -r -t 30 "This system is shutting down in 30 seconds.."

answered Mar 13, 2014 at 12:37

HostBits

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thank you so much :9 is this also possible in unix?
– tamani
Mar 13, 2014 at 13:06
Added syntax for unix
– HostBits
Mar 13, 2014 at 13:38
2

Unixes vary. On OS X (and Linux) you want shutdown -r +5 "message", for a shutdown in 5 minutes. (No -t, which specfies the amount of time to let programs exit gracefully.) You can vary the time, but 1 minute is the minimum. A longer time may be better because it actually gives users a chance to react, or perhaps even contact the admin to abort the shudown. On Solaris you do: shutdown -y -g 30 -i 6 "message" for a 30 second shutdown.
– Kevin Cathcart
Mar 13, 2014 at 21:58

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