操作系统的课程讲义，讲述了操作系统的各种知识，包括进程通信，存储管理，线程，文件管理等知识。-Operating System Course Training Manual, describes a variety of operating systems, including the process of communications, storage management, thread, file management knowledge.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.003292s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.103780s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000974s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000976s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003213s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000823s ]
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SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014997s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001035s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 120244 [ RunTime:0.021793s ]
