Hi,
Many people say that it is a simple fix to let cron run a GUI program: just
export DISPLAY=:0.0 -- telling where to display it. However, it is hard and
even impossible for me.
(I am using "env -i script_name" to test)
Suppose my script "run_gui.sh" can be run successfully:
env -i /path/run_gui.sh
Within run_gui.sh, there are:
export XAUTHORITY=xxx
export DISPLAY=:0.0
..
start the Java GUI program //this program is an automatic GUI program. It runs
for about one minute or so, then shut down automatically. No human interaction
is needed.
If I put run_gui.sh on cron and logged out(These linux machines are shared
desktops, not my personal machines). Our IT support told me that my gui program
have no place to put the display.(Since I have logged out, everything has
closed). I told them that many people on newsgroup say that it is possible and
they don't think so.
Another problem is that, since I was not logged in when the cron
job("run_gui.sh") was running, so there is no XAUTHORITY value.
I am just confused: many people say it is possible to run a GUI program by
cron. I assume that means they are not logged in when the cron job is run. How
come it is impossible for me?
Thank you very much.
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