Web Reference: Environment variables hold values related to the current environment, like the Operating System or user sessions. One of the most well-known is called PATH on Windows, Linux and Mac OS X. Oct 9, 2025 · The PATH variable is an important operating system environment variable. It tells the system which directories to search in order to find a particular program or command. Jan 16, 2026 · In the Linux operating system, the $PATH environment variable plays a crucial role in how the shell locates and executes commands. It is a colon-separated list of directories that the shell searches through when you enter a command without specifying its full path.
YouTube Excerpt: This video is part of the Udacity course "Configuring Linux Web Servers". Watch the full course at ...
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