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Old 06-25-2008, 03:31 PM   #1
ufmale
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Registered: Feb 2007
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Wake on Lan & Sleep on lan?


I think wake-on-lan is a cool thing for the current economical situation.

I was playing around with it and made it work on my computer.
Is there a Sleep-on-lan where you send package to turn off or nicely shutdown the machine (similar to wake-on-lan package)?
 
Old 06-25-2008, 05:34 PM   #2
rjlee
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The simple answer is no: wake-on-lan is a BIOS feature intended to solve the problem of powering up the machine without having to have the machine on to process network traffic.

But if you have terminal access to the machine then you can easily shut it down, to sleep, suspend or hibernate. The technology to do this is called ACPI.

To hybernate/suspend, try http://linux.about.com/od/commands/l/blcmdl1_apm.htm

To hybernate/suspend for a certain amount of time, try apmsleep: http://linux.about.com/library/cmd/blcmdl1_apmsleep.htm

Personally, I would create a user called acpi on the machine you want to control, and give that user permissions to run apm and apmsleep using sudo.

For example, to use one machine to tell another to standby, you could then use:
Code:
ssh -f acpi@host sudo apm -S
 
  


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