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Re^4: system call in crontab

by naildownx (Beadle)
on Jul 20, 2009 at 05:10 UTC ( [id://781527] : note . print w/replies, xml ) Need Help??

in reply to Re^3: system call in crontab
in thread system call in crontab

1. feh is a program that replaces your background
2. I ran env in my shell and did not see anything to do with feh anywhere...oh well...maybe there is an easier way to do what I am trying to do...
I have created a perl script that when you log in to your computer it randomly chooses a wallpaper, however if I want it to change say every 30 minutes or so I was going to let cron run my script every thirty minutes...seemed to make sense, but has turned into a nightmare..
I am open to other ideas to accomplish this.
The early bird gets the worm but the second mouse gets the cheese.

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Re^5: system call in crontab
by quester (Vicar) on Jul 20, 2009 at 06:07 UTC
    If you want to change your X Windows background, feh will need to know the name of the X Windows display to use. It will expect that name to be in the DISPLAY environment variable. If you only have one display on your local system, its value will be ":0.0" so you could use this:
    system("DISPLAY=:0.0 /usr/bin/feh --bg-center /home/user/Pictures/rota +te/1.jpg");
    or better
    $ENV{DISPLAY} = ":0.0"; system("/usr/bin/feh --bg-center /home/user/Pictures/rotate/1.jpg");