70
edits
Changes
Jump to navigation
Jump to search
Line 4:
Line 4: + + + + + Line 10:
Line 15: − Make directory for custom template+ Line 23:
Line 28: − + + + Line 52:
Line 59: + + + − + − | [http://forums.contribs.org/index.php?topic=43577.0 Forum post 2]
→Custom template
= Description =
= Description =
How to automatically run a command periodically with Cron daemon.
How to automatically run a command periodically with Cron daemon.
Cron is a time-based job scheduler in Unix-like computer operating systems. Cron enables users to schedule jobs (commands or shell scripts) to run periodically at certain times or dates. It is commonly used to automate system maintenance or administration, though its general-purpose nature means that it can be used for other purposes, such as connecting to the Internet and downloading email.
[http://en.wikipedia.org/wiki/Cron From Wikipedia]
Cron daemon is the Unix and GNU/Linux equivalent to Scheduled Tasks in Windows.
= Custom template =
= Custom template =
Custom templates survive updates and are included in a regular backup.
Custom templates survive updates and are included in a regular backup.
Check for a custom template directory. If one doesn't exist, make the directory for custom template with the following command
mkdir -p /etc/e-smith/templates-custom/etc/crontab
mkdir -p /etc/e-smith/templates-custom/etc/crontab
00 16 * * * root /root/cronjobs/external_ip.sh
00 16 * * * root /root/cronjobs/external_ip.sh
Syntax: (0-59) (0-23) (1-31) (1-12 or Jan-Dec) (0-6 or Sun-Sat) (user) (command)
Syntax: Minute(0-59) Hour(0-23) Day(1-31) Month(1-12 or Jan-Dec) Day of Week(0-6 or Sun-Sat) (user) (command)
The asterisk (*) is a wildcard entry meaning all. If you enter day, you have to enter month. To run something once a week, put * for day and month and enter a number for the day.
Save and exit.
Save and exit.
A script fired by a cron entry must be executable.
A script fired by a cron entry must be executable.
= Contribs=
[http://wiki.contribs.org/Crontab_Manager Crontab Manager] is a contribs which is able to do automatically what is needed above.
= Links =
= Links =
[http://forums.contribs.org/index.php?topic=29433.0 Forum post 1]
[http://forums.contribs.org/index.php?topic=29433.0 Forum post 1] | [http://forums.contribs.org/index.php?topic=43577.0 Forum post 2]
[http://wiki.contribs.org/SME_Server:Documentation:Developers_Manual#Configuration_file_templates Developers Manual on Configuration file templates]
[http://wiki.contribs.org/SME_Server:Documentation:Developers_Manual#Configuration_file_templates Developers Manual on Configuration file templates]