BASH: Is this right?

Werner · 10-12-2006, 04:07 PM

Hi,

I want that after booting the PC waits
first 3 hours in the background "sleeping"
for following shutdown,
but FULL to use am.

Afterwards it is to switch itself off independently,
but before I must be able to switch it off also at
any time.

Does it go in such a way:

#!/bin/sh
/bin/sleep 3 h && /sbin/shutdown h +m 2

Werner.

linmix · 10-12-2006, 05:12 PM

often the best way to sheck individual commands is at the cli directly before introducing them into a script.

Quote:

$ /bin/sleep 3 h
/bin/sleep: invalid time interval `h'
Try `/bin/sleep --help' for more information.

There should be no space between the time and the unit: 3h

unSpawn · 10-12-2006, 07:52 PM

And this doesn't work either I think.
/sbin/shutdown h +m 2
It should be "/sbin/shutdown -h $TIMESPEC"

And why waste a sleep? Just set the shutdown for now + 3 hours.
Add to /etc/rc.d/rc.local or equivalent, use "shutdown -c" to stop it:

Code:

TIMESPEC=`date --date='now + 3 hours' +"%H:%M"`
/sbin/shutdown -h $TIMESPEC &

spirit receiver · 10-13-2006, 03:01 AM

Why waste a date?

Code:

/sbin/shutdown -h +180

Werner · 10-13-2006, 01:20 PM

Quote:

Originally Posted by spirit receiver

Why waste a date?

Code:

/sbin/shutdown -h +180

O.K. but the warnings make nervous!

Werner.

ntubski · 10-13-2006, 08:13 PM

So it's better to have the computer shut down with out any warning at all??