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November 28, 2017 17:22
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Linux crontab: [~]$crontab
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crontab: command used to schedule and run tasks in the background at defined regular intervals. | |
Format: | |
* * * * * * | |
( MIN HOUR DOM MON DOW CMD ) | |
where: | |
MIN- minute -0-59 | |
HOUR-hour-0-23 | |
DOM-Date of Month-1-31 | |
MON- Month of year-1-12 | |
DOW-Day of week-0-6 | |
CMD-command- Any command to execute | |
After logging into the server, write command the below given command: | |
crontab -e | |
It will prompt you to edit thus edit/add your desired schedule for a file to be executed. | |
Few examples are mentioned below: | |
To execute a cron in every minute: * * * * * CMD | |
Example: * * * * * /path-of -file-to-be-executed | |
To execute a cron for particular time: (say every hour between 9 AM to 6 PM everyday) | |
Example: 0 9-18 * * * /path-of-file-to-be-executed | |
To execute a cron on particular day of the week:(say each monday at 10 AM and 6 PM) | |
Example: 0 10,18 * * Mon /path-of-the-file-to-be-executed | |
To execute a cron on particular date and time:(say Nov 15 at 10:15 AM) | |
Example: 15 10 15 11 * /path-of-the-file-to-be-executed | |
To execute a cron on every 10 minutes: | |
Example: */10 * * * * /path-of-the-file-to-be-executed |
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