1.常用命令

https://blog.csdn.net/hello_new_life/article/details/75099249  

https://blog.csdn.net/mddy2001/article/details/7703838

https://blog.csdn.net/seniusen/article/details/82885743

https://blog.csdn.net/jiachen0212/article/details/79002082

https://blog.csdn.net/chaoshengze/article/details/78012827

https://blog.csdn.net/litmxs/article/details/78157461#%E5%B8%B8%E7%94%A8%E8%BD%AF%E4%BB%B6