- 命令大全：https://www.runoob.com/linux/linux-command-manual.html
- 常用命令全拼：https://www.runoob.com/w3cnote/linux-command-full-fight.html
- rpm命令详解：https://blog.csdn.net/ccfxue/article/details/53318035
- touch命令详解：https://www.cnblogs.com/Hackerman/p/12623709.html
- man命令详解：https://www.cnblogs.com/DataArt/p/10010673.html