Understanding and Customizing the PATH Variable
Master how the shell locates executables through the PATH variable and learn to safely extend and troubleshoot it.
What is PATH?
The PATH environment variable is a colon-separated list of directories the shell searches to find an executable when you type a command.
echo "$PATH"How the Shell Resolves a Command
When you type ls, the shell scans each directory in PATH left to right and runs the first matching executable it finds.
type ls
which lsAll lessons in this course
- Managing Environment Variables (export, unset)
- Shell Startup Files (.bashrc, .profile)
- Package Management (apt, yum, pacman)
- Understanding and Customizing the PATH Variable