Linux那些事儿 之 我是Sysfs上.pdf

"sysfs is a ram-based filesystem initially based on ramfs. It provides a means to export kernel data structures, their attributes, and the linkages between them to userspace.” --- documentation/filesystems/sysfs.txt 可以先把documentation/filesystems/sysfs.txt读一遍。文档这种东西,真正读起来就嫌少了。Sysfs文件系统是一个类似于proc文件系统的