Learn about the Termux sl command — a fun Linux Easter egg. Discover how it works, why it exists, and how to use it in Termux.
Introduction
The sl command in Termux is one of the most fun and surprising commands you can try in the Linux terminal. Unlike most commands that perform serious tasks, sl is designed purely for entertainment.
When you type sl instead of ls, a train animation runs across your terminal. It’s a small Linux Easter egg that brings a smile to beginners and advanced users alike.
In this documentation, we’ll cover:
What sl does
How to install and run it
Why it exists
Tips for using it in Termux
What is the sl Command?
sl stands for Steam Locomotive
It’s a joke command for Linux systems
Its purpose is to entertain users who mistype ls (the standard command to list files)
Running sl triggers a train animation in your terminal
Fun fact: Many beginners discover it accidentally and love it!
How to Install sl in Termux
To use sl, you need to install it first:
Open Termux
Type the following command:
pkg install sl
Press y to confirm installation
How to Run sl
After installation, simply type:
sl
Then press Enter.
You will see a train move across your terminal
No additional options are required for the basic animation
Screenshot placeholder: Train animation in Termux
Optional Flags
sl also has a few fun flags you can try:
sl -l → Large train
sl -a → Smaller, “ascii-art” style train
sl -F → Flying train
These flags make the command even more fun for experimenting
Why sl Exists
Created as a joke for Linux users
Helps users remember to type ls correctly
Adds a little fun to the sometimes intimidating terminal experience
Great for teaching beginners that command-line tools can be playful
Tips for Beginners
Don’t worry if you mistype commands — Linux has many fun Easter eggs
Use sl to surprise friends or just have fun learning Termux
Combine with other fun commands like cowsay or fortune for extra amusement
Conclusion
The sl command is a perfect example of Linux humor and a fun way to engage with the terminal. While it doesn’t perform serious tasks, it’s an entertaining introduction to command-line experimentation.
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