How do I run a cron job as root?
6 Answers. Yes, just add it to the root users’ crontab; run the crontab -e command. The places cron stores its files can be a little bizzare, so use the crontab -e command which will make sure it’s in the right place, and I believe it checks the syntax.
What user does cron execute as?
Correct? That’s correct, if you run crontab -e it will execute as your user. Your scheduled cron jobs also run as your main user, but they don’t use the PATH settings that your user has. For that reason, we recommend that you use the full path to any executable that you run, eg use /usr/local/bin/python2.
Can cron run sudo?
If you are using crontab, then you will want to use root’s crontab. This will run it as root, and also not need sudo.
Why is bash script not executing from crontab?
To get around that, just set your own PATH variable at the top of the script. I can see one mistake in your crontab file configuration. In the below config you are trying to call backup.sh as same as in your shell prompt with sh prefix which may not work in cron. change the owner as said in comment, if needed.
Why is my Cron script not running in terminal?
Maybe your cron script uses the command somecommand found in /opt/someApp/bin, which you’ve added to PATH in /etc/environment? cron does not read that file, so running somecommand from your script will fail when run with cron, but work when run in a terminal. To get around that, just set your own PATH variable at the top of the script.
How to make a C script run as root?
If it is compiled, you can “chmod 4755” and set the owner of the file to root, and it will run as root. If it is not compiled, you can write a tiny wrapper in C (or any other compiled programming language) that simply calls your script, and setuid on the wrapper, and make sure the wrapper is owned by root.
What to do when cron job is running as system user?
If the cron job is running as a system user ( root, webmaster, …), make sure that user’s mail is redirected to you (and any other admin); with most mail setups, put lines like root: elzo in /etc/aliases.