The alias system works best where you want to set the command-line options on an individual command, although they can be used to expand a given command into a set of multiple commands, or pipes.
别名机制最适合于您希望设置单个命令的命令行选项的情况，虽然也可以使用它们来将给定的命令展开为一组命令或管道。
When you type ll, it's replaced by its alias, and any remaining command-line arguments are appended.
当您输入ll时，它会被其别名替换，并且附加上剩下的命令行参数。
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。
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。
On single commands where you want to invoke command-line options, it is best to use the alias system.
在您希望调用命令行选项的单个命令上，最好使用别名机制。
An alias can abbreviate command names and command-line phrases.
别名(alias)是缩写的命令名和命令行短语。
You can think of an alias as a nickname for a command line. Instead of typing.
您可以把别名看作是一个命令行的缩写。
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aliasll'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。
The command alias print 'lpr -h -Pps5 \!*' replaces \!* with command-line arguments.
命令aliasprint'lpr-h -Pps5 \!
The command alias print 'lpr -h -Pps5 \!*' replaces \!* with command-line arguments.
命令aliasprint'lpr-h -Pps5 \!
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