windows提供了命令行式的Ping命令，判定是否与某台主机通信畅通，这个程序就实现了这个功能。-windows provide a command-line-style Ping order, and determine whether a host of clear communication, the process of realization of this function.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001282s ]
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:0.095153s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001248s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001900s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001268s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003619s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001448s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003916s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015834s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001448s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 118575 [ RunTime:0.001307s ]
