Why this blog exists

The idea

Comandu teaches Linux in the terminal, one challenge at a time. The blog sits beside it: it explains the command, what the terminal answers, and the moment it shows up. Each one completes the other.

Why it was created

In a challenge the explanation has to fit on the screen. Here the path can be the whole thing. You can see the folder, list the names, go in, miss the spelling, and understand the permission without a rush.

If you read first, you reach the terminal knowing what to look for. If you read after, you confirm what you just did.

What you will find

• Commands for beginners: pwd, ls, and cd.
• Navigate folders: see, list, enter, and go back.
• Permissions: read, change, and execute.
• Stop a process: ps, kill, and kill -9.
• Find text: grep, the line number, and the whole folder.

The notes are short and have a check in the middle. This is not a manual. It is the same subject as the app, told without a rush.