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Operating System

From RaySoft

An operating system (OS) is a set of system software programs in a computer that regulate the ways application software programs use the computer hardware and the ways that users control the computer. For hardware functions such as input/output and memory space allocation, operating system programs act as an intermediary between application programs and the computer hardware, although application programs are usually executed directly by the hardware. Operating Systems is also a field of study within Applied Computer Science. Operating systems are found on almost any device that contains a computer with multiple programs - from cellular phones and video game consoles to supercomputers and web servers. Operating systems are two-sided platforms, bringing consumers (the first side) and program developers (the second side) together in a single market.[1]

Implementations

Extension:DynamicPageList3 (DPL3), version 3.6.4: Error: Error 1054: Unknown column 'cl1.cl_to' in 'on clause' Function: MediaWiki\Extension\DynamicPageList3\Query::buildAndSelect - Operating_System 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 = 'Operating_System')) WHERE `wp_page`.page_is_redirect = 0 AND `wp_page`.page_namespace = 0 ORDER BY sortkey ASC LIMIT 500

References

  1. ↑ https://en.wikipedia.org/wiki/Operating_system
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