Linux 101: How to add directories to your Linux $PATH

Your Linux PATH is how you define the directories for which commands can be run globally. In other words, if you have an executable file in a directory that is configured to be in your PATH, you can run that executable from anywhere in the Linux file structure. This is what makes it possible to run commands in /usr/bin from your home directory (or anywhere, for that matter). .

Link: Linux 101: How to add directories to your Linux $PATH
via http://www.techrepublic.com

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