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How do I run a cron job as another user?
To run a program as another user from crontab, just put an entry similar to the the following in a Linux or Unix crontab file (typically by issuing the “crontab -e” command), and the program named myProgram.sh will be run at 1:30 a.m. using the Bourne shell, and will be run as the user nobody .
How can I see the crontab entry for all users?
Under Ubuntu or debian, you can view crontab by /var/spool/cron/crontabs/ and then a file for each user is in there. That’s only for user-specific crontab’s of course. For Redhat 6/7 and Centos, the crontab is under /var/spool/cron/ . This will show all crontab entries from all users.
Which user is running crontab?
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.
What user does cron daily run as?
user root
1 Answer. You are right, the jobs in /etc/cron. daily (and weekly/monthly, etc.) are always executed as user root but you can simply swith the user from within the script and call that very script again as that other user, including all supplied arguments (although there won’t be any in a cron.
How do I assign a user to crontab?
How to Limit crontab Command Access to Specified Users
- Become the root role.
- Create the /etc/cron. d/cron. allow file.
- Add the root user name to the cron. allow file.
- Add the user names, one user name per line. Include users that will be allowed to use the crontab command.
What is crontab user?
Cron is a system daemon used to execute desired tasks (in the background) at designated times. A crontab file is a simple text file containing a list of commands meant to be run at specified times. It is edited using the crontab command. Each user (including root) has a crontab file.
How do I see crontab users?
To verify that a crontab file exists for a user, use the ls -l command in the /var/spool/cron/crontabs directory. For example, the following display shows that crontab files exist for users smith and jones. Verify the contents of user’s crontab file by using crontab -l as described in “How to Display a crontab File”.
How to specify in crontab by what user to run script?
Instead of creating a crontab to run as the root user, create a crontab for the user that you want to run the script. In your case, crontab-u www-data-e will edit the crontab for the www-data user. Just put your full command in there and remove it from the root user’s crontab.
Where can I find the root of my crontab?
Well depends on the script but easily you can find your crontab as root with. crontab -l -u . Or you can find crontab from spool where is located file for all users. cat /var/spool/cron/crontabs/ . To show all users’ crontabs with the username printed at the beginning of each line:
How to run cron jobs as a specific user other than root?
If you are the super user then you can also modify or create the cron jobs of other users. The crontab command line option -u allows you to specify an username and edit the jobs of that user. To modify the cron jobs for user tom, use the following command. $ crontab -u tom -e.
How to verify the existence of a crontab file?
To verify that a crontab file exists for a user, use the ls -l command in the /var/spool/cron/crontabs directory. For example, the following display shows that crontab files exist for users smith and jones. Verify the contents of user’s crontab file by using crontab -l as described in “How to Display a crontab File”.