Shebang and Your First Script

Part of the Bash course

If the word "script" still sounds like something only real programmers write, relax. A script is just a text file with a list of commands in it, and by the end of this lesson you will have written one, run it, and understood exactly why it worked. Nothing here needs programming experience.

In the last lesson you learned that Bash can be used two ways: typed one line at a time (interactive), or saved in a file and run all at once (a script). A script file is nothing special on disk, it is plain text, the same as a shopping list. What makes it useful is that Bash can read it top to bottom and run every line, so you never retype the same commands twice. ...