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I have this single program that doesn't run from cron (RScript). I've tried running an sh script and calling it from that. Calling it by its full path and the likes. But it won't run. Running it directly via the console (from the same user as it's croned) works fine. What could cause this, or how can I get around it? My crontab has one line:

* * * * * sh /home/user/path/to/script/scriptFile.sh

the script file is:

/bin/Rscript /home/user/path/to/script/scriptFile.R

I've also tried having

cd /home/user/path/to/script/ && /bin/Rscript /home/user/path/to/script/scriptFile.R

As the crontab file

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  • Hi @AdminBee. Thank you for your response. It's a fairly standard Ubuntu 20.04 (running on Oracle). What other crontab detail are needed? Commented Aug 4, 2022 at 13:24
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    @AdminBee Edited. Does it make more sense now? Thank you Commented Aug 4, 2022 at 15:00
  • Try the solution in unix.stackexchange.com/a/303017/100397, which captures stdout and stderr. Remember also that cron sends you a (local) email for every attempted run that results in some sort of output. You'll find them with the mail or mailx command (or less $MAIL if you want the direct route) Commented Aug 4, 2022 at 15:02
  • Does this answer your question? Shell script not running with Cron, but runs manually Commented Aug 4, 2022 at 15:40
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    OK. I think it's some error at the application level with the script. It's running. But only producing errors. And they go to looog.err.log :) Commented Aug 4, 2022 at 18:43

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Running Rscript from cron seems to have libPaths wrong - It seems to have other environment variables all toogether. This primarily messes up loading libraries. You can either install packages system-wide for R. Or use .libPaths() at the start of the script, pointing it to where it should take the packages from.

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