在介绍如何使用ksh编辑命令行之前，必须设置您的环境。

Before looking at editing the command line with KSH, you must set up your environment.

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bash中的主命令提示符同时提供了编辑命令行的能力和历史记录功能，后者记住各个命令行，以便您能够再次执行它们。

The main command prompt within bash provides both the ability to edit the command line and a history function, remembering individual command lines so that you can execute them again.

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我们很幸运，在Linux和UNIX的各种变体上，有一些gui化的编辑器以及命令行编辑器，还有全面的locale支持。

We are fortunate to have GUI-fied, as well as command-line editors, and comprehensive locale support on Linux and various UNIX varieties.

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