PATH Variable

Normally to run an application, you need to fully specify the directory path to the application
- For example, /home/user1/Downloads/installer.deb
$PATH is the variable which defines the directories in which the OS looks for applications to run
- This way, you can just run applications by their name, such as nuclei instead of /home/max/go/bin/nuclei
Which directories are in PATH?
- Just run echo $PATH and you'll see all the directories configured
- To find out where an application is being run from, you can use which [command]
  - e.g., which cut reveals that it's being run from /usr/bin/cut
How do you add directories to PATH?
- Open the config file for your shell of choice
  - For example, nano ~/.zshrc or nano ~/.bashrc
- At the very end of the file, add export PATH="$PATH:path/to/directory/here", replacing path/to/directory/here with the target directory
  - For example to add the Go bin to the PATH variable, I entered export PATH="$PATH:home/max/go/bin"
- Exit Nano and save the file, then Reload your terminal with the new config using source ~/.zshrc or source ~/.bashrc

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