train

If you've ever worked in the Linux terminal, you're probably familiar with the classic ls command for listing directory contents. But what happens when your fingers slip and you accidentally type sl instead? Thanks to a playful and humorous tool named sl (Steam Locomotive), instead of an error message, you get to watch a charming ASCII train steam across your terminal window. This amusing response not only lightens the mood but also gently nudges you about the typo — turning a small mistake into a brief moment of joy. sl stands for Steam Locomotive, and it's essentially a small program designed to correct and humor those who mistype ls as sl by displaying an animated ASCII art train that travels across your terminal window.