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justincataldo
Guru
Joined: 15 Jun 2005
Posts: 376
Location: Australia
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 Posted: Mon Oct 16, 2006 12:04 am Post subject: Turn machine on/off. |
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In Apple OSX you can schedule a time for the machine to boot and turn off all by itself.
How the hell does it do that? Via a cron job?
Can this be done in linux? |
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Freakazoid
Tux's lil' helper
Joined: 13 Apr 2004
Posts: 104
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| Posted: Mon Oct 16, 2006 12:09 am Post subject: Re: Turn machine on/off. |
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| justincataldo wrote: | In Apple OSX you can schedule a time for the machine to boot and turn off all by itself.
How the hell does it do that? Via a cron job?
Can this be done in linux? |
don't see why it could't be done in linux, provided proper ACPI support for software power off is compiled in the kernel.
I can think of one of two methods of doing this: cron (I think), and "at" (totally forget which package has "at" unfortunately)
basically you'd just schedule a "poweroff" or a "shutdown -t now" whever you want the machine to turn itself off. |
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justincataldo
Guru
Joined: 15 Jun 2005
Posts: 376
Location: Australia
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| Posted: Mon Oct 16, 2006 12:10 am Post subject: |
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I see.
What about turning the machine on? |
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Headrush
Watchman
Joined: 06 Nov 2003
Posts: 5597
Location: Bizarro World
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| Posted: Mon Oct 16, 2006 12:11 am Post subject: |
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Yes you can do that with cron. (as root at least)
Just execute the command "shutdown -h now".
The are several GUI for easily setting the cron command and time. (kcron for example)
Edit: Damn, guess someone types faster. 
Last edited by Headrush on Mon Oct 16, 2006 12:31 am; edited 1 time in total |
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NeddySeagoon
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Joined: 05 Jul 2003
Posts: 55239
Location: 56N 3W
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| Posted: Mon Oct 16, 2006 12:13 am Post subject: |
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justincataldo,
You can set an alarm in the BIOS to wake up and boot. I'm not sure if that can be set from within Linux, probably not, because all BIOSes store settings differently although the Real Time Clock interface is standard.
You can't easly set a shutdown time but the shutdowm command takes a delay parameter in mimutes,
So shuts down in five minutes time. You could write a script to do arethmetic on the time.
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NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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