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Old 02-05-2012, 03:25 PM   #1
Registered: Jan 2010
Distribution: Ubuntu
Posts: 97

Rep: Reputation: 4
Sleep and Wake scheduling

Hello all,

I have the concept of a script that enables a user to schedule when the machine goes to sleep and when it wakes up.

I have written a bash script that writes everything directly to the user crontab file. The minutes (21), hour (20), and seconds to wake (14400) up are written to the crontab file like so:
21 20 * * * /usr/sbin/rtcwake -m mem -s 14400
I have a crontab scheme that goes like the following:
* * * * * $HOME/.bin/executable1
* * * * * $HOME/.bin/executable2
So as of current my script violates my crontab scheme. I have tried to write a second script that writes to my crontab file and a file titled: going_to_sleep. The timing seems to be off with my second script and I have no idea what maybe wrong. As you may have guessed this file is located in $HOME/.bin/

Script1.txt is the first script that I describe.
Script2.txt is the second script that I describe.
going_to_sleep.txt is the file that I would like to be edited by the second script.


I have been playing with this idea some more and I cleaned up my script a little bit. The new file name is script3.txt. I am trying to get the date part to actually say the adjusted time for sleephours and sleepminutes. I can make the date command state the date with an adjusted hour with no issue. It is when I add the sleepminutes variable to it is when I get errors. Anyone know how to adjust the hour and minute of the date command at the same time?
Attached Files
File Type: txt script1.txt (1.6 KB, 13 views)
File Type: txt script2.txt (1.8 KB, 14 views)
File Type: txt script3.txt (1.4 KB, 12 views)

Last edited by lonesoac0; 02-12-2012 at 02:35 PM. Reason: updating of the situation.


bash scripting, cronjob, datetime, math

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