Name: #!/bin/bash (Steam)
Brand: High on Caffeine
SKU: KT-BE6ADDB475
Price: 1.24 EUR
Availability: InStock

#!/bin/bash is a joyful adventure game about a person who fell into a well that opened up into a huge cave full of monsters and loot! Features: Intentionally awkward controls (Terminal commands) ASCII art and graphics Environmental puzzles Easter eggs And there may even be a cake

Redeem on Steam

You need a Steam account and the Steam app.

Step 1: Open Steam and sign in.
Step 2: Open the Games menu, then choose Activate a Product on Steam…
Step 3: Enter the key and follow the prompts.
Step 4: The game appears in your Library.

Steam's redeem page Full guide for Steam

Activation notes from the publisher

Go to: http://store.steampowered.com/ and download STEAM client Click "Install Steam" (from the upper right corner) Install and start application, login with your Account name and Password (create one if you don't have). Please follow these instructions to activate a new retail purchase on Steam: Launch Steam and log into your Steam account. Click the Games Menu. Choose Activate a Product on Steam... Follow the onscreen instructions to complete the process. After successful code verification go to the "LIBRARY" tab and start downloading.