如何在不指定完整路径的情况下运行程序? [英] How to run a program without specifying the full path?

问题描述

当我键入"rails"时，为什么不起作用...但是当我键入"/var/lib/gems/1.8/bin/rails"时，它将起作用吗?如何绑定它，这样我就不必每次都键入完整路径了?

How come when I type "rails", it won't work... but when I type "/var/lib/gems/1.8/bin/rails" it will work? How do I bind it so that I don't have to type the full path everytime?

推荐答案

您需要编辑$PATH环境变量.

例如，在您的.bashrc中:

export PATH=$PATH:/var/lib/gems/1.8/bin

或者，您可以在.bashrc中使用别名:

Alternatively, you can use an alias, in your .bashrc:

alias rails=/var/lib/gems/1.8/bin/rails

或者您甚至可以将rails二进制文件(或符号链接)放入$PATH中列出的目录之一.要查看这些目录，请键入echo $PATH.

Or you could even put the rails binary (or a symlink) to one of the directories listed in your $PATH. To see those directories, type echo $PATH.

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