crontab problems

charlo.navidad · 03-18-2007, 11:41 PM

Hi everyone. I have a problem using crontab. I used crontab to schedule some tasks. But i encountered a problem, when i tried to display the xclok every 2 minutes. the xclock didnt came out at all. Im using RHEL 4. this is my format in my crontab

*/2 * * * * /usr/X11R6/bin/xclock

Please help me with this. I need to apply this in one of my projects. Thanks in advance.

GrapefruiTgirl · 03-18-2007, 11:59 PM

You could try replacing the */2 with 0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58

I know it seems weird, but I had to do this, and it worked. It wouldn't work the other way.

charlo.navidad · 03-19-2007, 02:04 AM

Hi, I tried that already. But still didn't work.

I think this is about the display. thats why xclock didn't showed up.
i need to work out on the command.

Thank you.

jlinkels · 03-19-2007, 06:12 AM

Did you put an empty line after the last line in crontab?

jlinkels

GrapefruiTgirl · 03-19-2007, 09:46 AM

OK, after checking out the man page (man xclock) perhaps you need to specify which display to put the clock on, like: xclock :1 or xclock :6 or xclock :7
not sure what other flags may be needed, but try a few, see if that helps.