Lesson 1 — What is Linux?
Linux is an open-source operating-system kernel used by many distributions, including Ubuntu, Debian, Fedora, and Kali Linux. Different distributions package tools and software for different needs.
Lesson 2 — Navigating folders
Common commands include pwd to print the current directory, ls to list files, and cd to change directories.
pwdlscd DocumentsLesson 3 — Files and directories
mkdir practice creates a directory named practice. touch notes.txt creates an empty file on many Linux systems. Practice in a folder you own and check paths before changing or deleting files.
Lesson 4 — Users and permissions
Linux permissions help control who can read, write, or execute files. Avoid running commands with administrator privileges unless you understand what they do.
Lesson 5 — Updates and software
Use your distribution's official package manager and documentation. Read prompts before approving changes, and keep backups of important files.