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Commands
50 Essential Linux Commands
Navigate the terminal confidently with the most-used commands for daily tasks.
Linux powers the majority of web servers, cloud infrastructure, Android devices, and supercomputers worldwide. Learning Linux gives you direct control over your system, makes you a better developer, and is essential for careers in DevOps, cloud engineering, and cyber security.
💡 Tip: Install Ubuntu alongside Windows using dual boot, or run it in a free virtual machine (VirtualBox). You can also use Windows Subsystem for Linux (WSL) to get a Linux terminal inside Windows without leaving your current setup.
Linux Introduction Roadmap
Week 1
What Is Linux?
Open-source history, Linux distributions (distros), the kernel vs. the shell, and why Linux dominates servers and cloud.
Week 2
Choosing a Distribution
Ubuntu for beginners, Fedora for cutting-edge, Debian for stability, and CentOS/RHEL for enterprise environments.
Week 3
Desktop vs. Server
GUI environments (GNOME, KDE) vs. headless server installs. When to use each and how they differ.
Ubuntu Getting Started Roadmap
Step 1
Install Ubuntu
Download Ubuntu ISO, create a bootable USB, install on VM or physical machine, and complete initial setup.
Step 2
Package Management
Use apt update, apt install, apt remove, and snap to manage software packages.
Step 3
System Configuration
Users, groups, network settings, SSH access, and keeping your system updated and secure.
Essential Commands Roadmap
Navigation
File & Directory Commands
ls, cd, pwd, mkdir, rm, cp, mv, touch, and find for everyday file management.
Viewing
Reading & Editing Files
cat, less, head, tail, nano, and vim basics for viewing and editing text files.
System
Processes & System Info
ps, top, htop, kill, df, du, uname, and whoami for monitoring and control.
Network
Networking Commands
ping, curl, wget, ssh, scp, and ip addr for connectivity and remote access.
File System & Permissions
File System
Linux Directory Hierarchy
/ root, /home user files, /etc configuration, /var logs, /usr programs, and /tmp temporary files.
Permissions
Understanding Permissions
Read (r), write (w), execute (x) for owner, group, and others. Numeric notation: 755, 644, 600.
Management
chmod, chown & chgrp
Change file permissions and ownership. Use chmod +x for scripts and sudo chown for ownership transfers.
📝 Note: The terminal is your superpower. Start with 5–10 commands per day, use tab completion, and read man pages with
man command when you need help.
Featured Linux Tutorials
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File System
Linux Directory Structure Explained
Understand what lives in /etc, /var, /home, and every major directory.
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Permissions
chmod & chown — Complete Guide
Master file permissions with symbolic and numeric notation.
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Ubuntu
Install Ubuntu on VirtualBox
Set up a free Linux virtual machine on Windows or Mac step by step.