cron
cron is a shell command for scheduling a job (i.e. command or shell script) to run periodically at a fixed time, date, or interval. As scheduled, it is known as a cron job. Although typically used to automate system maintenance and administration it can be used to automate any task. cron is most suitable for scheduling repetitive tasks as scheduling a one-time task can be accomplished via at.[1]
Documentation
- man 8 'cron' [EN]
Components
Extension:DynamicPageList3 (DPL3), version 3.6.4: Error: Error 1054: Unknown column 'cl1.cl_to' in 'on clause' Function: MediaWiki\Extension\DynamicPageList3\Query::buildAndSelect - cron Query: SET STATEMENT max_statement_time=10 FOR SELECT DISTINCT IFNULL(cl1.cl_sortkey, REPLACE(CONCAT(CASE `wp_page`.page_namespace WHEN 1 THEN 'Talk:' WHEN 2 THEN 'User:' WHEN 3 THEN 'User_talk:' WHEN 4 THEN 'RaySoft:' WHEN 5 THEN 'RaySoft_talk:' WHEN 6 THEN 'File:' WHEN 7 THEN 'File_talk:' WHEN 8 THEN 'MediaWiki:' WHEN 9 THEN 'MediaWiki_talk:' WHEN 10 THEN 'Template:' WHEN 11 THEN 'Template_talk:' WHEN 12 THEN 'Help:' WHEN 13 THEN 'Help_talk:' WHEN 14 THEN 'Category:' WHEN 15 THEN 'Category_talk:' END, `wp_page`.page_title), '_', ' ')) AS `sortkey`,`wp_page`.page_namespace AS `page_namespace`,`wp_page`.page_id AS `page_id`,`wp_page`.page_title AS `page_title` FROM `wp_page` `wp_page` JOIN `wp_categorylinks` `cl1` ON ((`wp_page`.page_id = cl1.cl_from AND cl1.cl_to = 'cron')) JOIN `wp_categorylinks` `cl2` ON ((`wp_page`.page_id = cl2.cl_from AND cl2.cl_to = 'Component')) WHERE `wp_page`.page_is_redirect = 0 AND `wp_page`.page_namespace = 0 ORDER BY sortkey ASC LIMIT 500
References
- ↑ Wikipedia contributors. "cron." Wikipedia. https://en.wikipedia.org/wiki/Cron (accessed 18.08.2025)