编辑功能意味着您可以在当前显示的命令行中向前和向后移动，以做出更改或纠正输入错误。
The editing functionality means that you can go forward and backward through the command line currently displayed to make changes and correct typos.
扩展您的命令行资源可以显著提高您的工作效率，并促使您朝着UNIX命令行高手的方向前进！
Expanding your command-line resources can provide a big increase in your productivity and propel you toward becoming a UNIX command line wizard!
更广泛的命令(例如按单词向前和向后移动)可以通过readline库来控制，该库在缺省情况下同时支持vi和emacs绑定。
More extensive commands, such as going backward and forward by words, are controlled by the Readline library that supports both vi and emacs bindings by default.
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