#+options: toc:nil num:nil author:nil

* Variables and how to add a directory to $PATH

System variables are stored in users environment

- ~$PATH~ Finds the content of a variable ("PATH")
- "env" variables defined in shell environment

** Add directory to path

[[https://wiki.archlinux.org/title/Environment_variables]["Environment variables" in: Arch wiki]]

To add a directory to the PATH for local usage, put
the following in "~/.bash_profile":

#+begin_example bash
export PATH="${PATH}:/home/my_user/bin"
#+end_example

This will add the directory at the end of $PATH. To update the variable, re-login or source the file:

#+begin_example bash
source ~/.bash_profile
#+end_example

Then check directories in "$PATH"

#+begin_example bash
echo $PATH
#+end_example