LINUX环境下的设备驱动开发。从内核模块讲起，涉及到字符设备、块设备、网络设备、USB设备、PCI设备等等。-LINUX environment device driver development. Talk from the kernel module, related to character devices, block devices, network equipment, USB devices, PCI devices and so on.
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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:0.073672s ]
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