一个用C++实现的模拟UNIX的cat的程序，使用了STL的istreambuf_iterator，支持“-”，终端直接输出，文件输出和错误输出。-C to achieve a simulated UNIX cat procedures, the use of the STL istreambuf_iterator support "-", a direct output terminals, document output and the output error.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001315s ]
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:0.090154s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001269s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001880s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001238s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005466s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001184s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003261s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.015376s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001482s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 65772 [ RunTime:0.001452s ]
