So I needed to setup automated backups poor man style. Since I’m most proficient in PHP I created several PHP scripts that tar, gzip, and ftp my important files to a remote server. I then automated this by adding each script as a cron job to be run every sunday early in the morning. Here’s the crontab syntax:
* * * * * command to be executed - - - - - | | | | | | | | | ----- Day of week (0 - 7) (Sunday=0 or 7) | | | ------- Month (1 - 12) | | --------- Day of month (1 - 31) | ----------- Hour (0 - 23) ------------- Minute (0 - 59)
To edit cronjobs use the following shell commands:
crontab -e # edits your users crontab file crontab -u username -e # edits another users crontab
Here is a mock example:
15 3 * * 7 /home/root/backupmymusic.php 15 4 * * 7 /home/root/backupmyimages.php
Here is a link for creating a script to check all users cronjobs.
http://stackoverflow.com/questions/134906/how-do-i-list-all-cron-jobs-for-all-users
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Thank you. This was very helpful since I’m new to cronjobs. I was going to write a PHP script that deletes users that have not verified thier account within 30 days out of a database.