删除特定目录。整理源代码的时候，为了将debug, release等子目录删除，随手写的。-To delete a specific directory. Finishing time of the source code, in order to debug, release, etc. subdirectory deleted, picked wrote.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001069s ]
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:0.066126s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001011s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001279s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001026s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003222s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000922s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003834s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.029261s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.529646s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 107131 [ RunTime:0.044225s ]
