[启动shell](%E5%90%AF%E5%8A%A8shell.md) [常用命令](%E5%B8%B8%E7%94%A8fsfsf%E5%91%BD%E4%BB%A4.md) [高级命令](%E9%AB%98%E7%BA%A7%E5%91%BD%E4%BB%A4.md) [内建命令](%E5%86%85%E5%BB%BA%E5%91%BD%E4%BB%A4.md)