Scripting

https://ryanstutorials.net/linuxtutorial/scripting.php

• 1st line: the shebang: #! List the interpreter you are using. Good practice in case of using script in other conditions.
• Naming: While Linux is an extension-less system, put the .sh extension for convenience.
• Comments: start with # It is common practice to include a comment at the top of a script with a brief description of what the script does and also who wrote it and when

# A simple demonstration script
# Ryan 4/2/2021

• ./ Tells the system that you want to run a specified script
• Script must have execute permissions to run
  • A good command to run to ensure your script is set up right is chmod 755 <script>

Variables

• Container for piece of data
• When we set a variable, we specify it's name, followed directly by an equals sign ( = ) followed directly by the value. (So, no spaces on either side of the = sign.)
• When we refer to a variable, we must place a dollar sign ( $ ) before the variable name.

#!/bin/bash
# A simple demonstration of variables
# Ryan 4/2/2021

name='Ryan'
echo Hello $name
./variableexample.sh
Hello Ryan

Command line arguments