Script location

• You can use absolute path or relative path to execute the script

• Keep the script in the folder listed in $PATH

• So what is $PATH?

  • Computer has a list of folders where it searches for scripts. This list is called $PATH
  • Make sure that the folder where the script is located is included in the $PATH list.

• Order of the folders in the $PATH list matters.

  • The computer looks for a script in each folder based on the order in which they appear in the list ($PATH).
  • So, if there are multiple folders with scripts of the same name, the computer will use the script from the first folder in the list that has it.

bash environment

• When you're using a computer system and open a terminal while you're already logged in, the type of terminal you get is called a "Non-login shell."
  • It doesn't ask for your login information again because you're already logged in.
• When you connect to a different computer through a process called SSH, and then open a terminal on that remote machine, the terminal you get is called a "Login shell."
  • This shell checks if you have the proper login credentials (like a username and password) to access the remote machine.