Module 1 · The terminal, without fear Lesson 1 of 15

Files, paths and permissions

Worked example

chmod +x deploy.sh makes a script runnable; chmod 644 on a private key exposes it; sudo is not a fix for not knowing why the write failed.

Your practice task

Create a folder tree, move and rename files, make a script executable, and create a file whose owner cannot read it — then explain to yourself why.

Do this before moving on. Reading a solution teaches the shape of it; typing it teaches you.

Key takeaway

A Linux path is either absolute from / or relative from where you are. Permissions are the three permissions of owner, group and others — and most "permission denied" errors are fixed by understanding which one you are.

Almost there

15 lessons left of 15

Finish every lesson to unlock the certificate. Each one ends in a practice task — do them and the final project brief writes itself.