Tips for Crontab

  1. Add “2>&1 >> cron.log” to redirect stderr and log output. “>>” means appending while “>” means overwriting.
  2. Check the “+x” mode of the script.
  3. Check the relative path in both the script and the cron config. Cron may run in a different directory.
  4. Check the encoding of the script. Cron may run in an environment different from bash.
  5. Check the privileges related with the files used in the script.
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