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  1. 2020
  2. December

28th

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Last updated 4 years ago

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当我们说起 Linux 命令行时，其实我们指的是 shell。shell 是一个运行于操作系统之上的程序，是用户与操作系统交互的桥梁，它负责接收用户输入的命令并将其传递给操作系统，让操作系统去执行，以及展示命令的执行结果（如果有的话）。几乎所有的 Linux 发行版都支持一个叫做 bash 的 shell 程序，bash 属于 GNU 项目，「bash」这个名字是「Bourne Again SHell」的缩写，意为 bash 是 sh 的增强版，而 sh 是原始的 Unix shell 程序，其作者是 Steve Bourne。

Shell概述

参考资料：

  • 《The Linux Command Line Fifth Internet Edition》第 1 章- What Is the Shell？