15Crontab Example
A line in crontab file like below removes the tmp files from /home/someuser/tmp each day at 6:30 PM.
30 18 * * * rm /home/someuser/tmp/*
Changing the parameter values as below will cause this command to run at different time schedule below :
min | hour | day/month | month | day/week | Execution time |
30 | 0 | 1 | 1,6,12 | * | – 00:30 Hrs on 1st of Jan, June & Dec. |
0 | 20 | * | 10 | 1-5 | –8.00 PM every weekday (Mon-Fri) only in Oct. |
0 | 0 | 1,10,15 | * | * | – midnight on 1st ,10th & 15th of month |
5,10 | 0 | 10 | * | 1 | – At 12.05,12.10 every Monday & on 10th of every month |
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Note : If you inadvertently enter the crontab command with no argument(s), do not attempt to get out with Control-d. This removes all entries in your crontab file. Instead, exit with Control-c.