Authored Content

Files in a folder

Learn how to use goto to alias and navigate to directories with autocomplete in Linux.
Coding on a computer

Learn how to use awk '!visited[$0]++' without sorting or changing their order.
penguins

Build a simple ToDo list application with the GTK+ Ruby bindings.
COBOL punch card

Learn how to create a Bash script that helps users work more efficiently and accurately.