How to edit the periodicity of a cronjob in Linux
Knowledge Base - How To
To modify the periodicity of your command, edit your crontab and modify the part below in bold
0 2 * * 0 command_to_run
according to the legend
Minute / Hour / Day / Month / Day of the week
with the options
* any value
, value list separator
- range of values
/ step values
i.e. the above one will start the job at 02:00 on Sunday.