For example, creating alias ll 'ls -hlt' reduces a commonly used command line to just two letters-less to type and less to remember.

例如，命令alias ll ' ls - hlt '将一个常用的命令行缩减为两个字母，从而使要输入和要记住的东西变得更少。

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Functions are callable from the command line, too, and fill the gap between an alias and a full-blown script.

函数也可以从命令行调用，它们填补了别名与完全成熟的脚本之间的空缺。

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The support for command-line arguments is key to supporting certain commands and combinations where an alias would be unable to work.

对于支持别名无法在其中工作的某些命令和组合，对命令行参数的支持非常关键。

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