Cron Job

cron job

// Install cron 
# sudo apt-get update
# sudo apt-get install cron


// Open cron job list
# sudo crontab -l

// Create cron job in the list
# sudo crontab -e


// run something every five minutes:
*/5 * * * *  php /home/user/test.php

.---------------- minute (0 - 59) 
|  .------------- hour (0 - 23)
|  |  .---------- day of month (1 - 31)
|  |  |  .------- month (1 - 12) OR jan,feb,mar,apr ... 
|  |  |  |  .---- day of week (0 - 6) (Sunday=0 or 7)  OR sun,mon,tue,wed,thu,fri,sat 
|  |  |  |  |
*  *  *  *  *  command to be executed

Sources

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