Lab lesson · free
Learn to write Bash scripts (with exercises)
A Bash script bundles commands you'd otherwise type one by one into a repeatable file. That's exactly what makes admins fast. Here you write your first script step by step – and run it directly on a real VM.
Shebang and executability
Every script starts with #!/bin/bash – the shebang that tells the system what runs the file. chmod +x makes it executable. This is exactly where Bash connects to file permissions.
Variables and arguments
You store values in variables (name="value"); inputs reach the script via $1, $2. That turns a rigid sequence into a flexible tool.
Loops and conditions
With for/while loops and if conditions you automate repetition and make decisions – the basis of any real automation.
What you practise
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