本文介绍了Unix/Linux下最流行的shell--Bash(Bourne AgainShell),且除了介绍BASH 的知识之外，也有许多有用的关于Linux/UNIX 的知识和其他shell 的介绍。-This article describes the Unix/Linux under the most popular shell- Bash (Bourne AgainShell), and in addition to the knowledge of BASH introduced, there are also many useful on Linux/UNIX knowledge and the introduction of other shell.