Linux Fundamentals

A collection of 27 posts

Linux Fundamentals

Removing Software in Linux

This post covers how to remove software in Linux using apt, including the differences between apt remove and apt purge, cleaning up orphaned dependencies with autoremove, and checking what packages are installed. It is aimed at Linux beginners using Ubuntu or Debian-based systems.

Linux Fundamentals

Updating and Upgrading Linux Packages

This post explains how to keep a Linux system up to date using the apt package manager. It covers the difference between apt update and apt upgrade, walks through real terminal output, and introduces full-upgrade and command chaining for efficiency.

Linux Fundamentals

Installing Software in Linux with apt

Learn how to install, update, and remove software in Linux using the apt package manager. Covers essential commands, repository concepts, and dependency management for Ubuntu and Debian-based systems.

Linux Fundamentals

Understanding the Root User in Linux

Learn about the root user in Linux, the ultimate administrator account with complete system control. Discover safe practices using sudo, security best practices, and when root privileges are necessary for system administration tasks.

Linux Fundamentals

The sudo Command: Running as Administrator

Learn how to use the sudo command in Linux to run commands with administrator privileges safely. Covers basic syntax, common use cases, security best practices, and troubleshooting tips for beginners.

Linux Fundamentals

Creating and Managing Users in Linux

Learn the essential commands and best practices for creating, modifying, and managing user accounts in Linux. Covers useradd, usermod, userdel, groups, and security considerations for proper user administration.

Linux Fundamentals

Linux Users and Groups: A Beginner Guide

Learn the fundamentals of Linux users and groups, including different user types, how to check user information with commands like whoami and id, and why understanding this system is crucial for file permissions and system administration.

Linux Fundamentals

Changing File Ownership with chown

Learn how to use the chown command in Linux to change file and directory ownership. This guide covers basic syntax, practical examples, and common scenarios for managing user and group ownership effectively.

Linux Fundamentals

Changing File Permissions with chmod

Learn how to use the chmod command to change file permissions in Linux. Covers both symbolic and numeric modes with practical examples for securing files and directories.

Linux Fundamentals

Linux File Permissions Explained Simply

Linux file permissions control who can read, write, or execute files using a simple three-group system. This beginner-friendly guide explains how to read permission strings and use chmod to modify access rights.

Linux Fundamentals

Searching Inside Files with Grep

Learn how to use the grep command to search for text inside files in Linux. Covers basic syntax, useful options like case-insensitive searching and line numbers, regular expressions, and practical examples for log files and configuration management.

Linux Fundamentals

Searching for Files in Linux with Find

Learn how to effectively search for files in Linux using the powerful find command. This beginner-friendly guide covers essential options like searching by name, size, type, and time, plus practical examples for combining criteria and executing actions on found files.

Linux Fundamentals

Viewing File Contents in Linux

Learn essential Linux commands for viewing file contents including cat, less, head, and tail. Covers practical examples for examining configuration files, monitoring logs, and navigating large documents effectively.

Linux Fundamentals

Deleting Files and Folders in Linux

Learn how to safely delete files and folders in Linux using the rm and rmdir commands. Covers essential safety practices, wildcards, and common mistakes to avoid when removing files from the command line.

Linux Fundamentals

Copying, Moving, and Renaming Files in Linux

Learn the essential Linux commands for file management: cp for copying files and directories, mv for moving and renaming, plus safety tips and practical examples to avoid data loss.

Linux Fundamentals

Creating Files and Folders in Linux

Learn the essential Linux commands for creating files and folders, including touch, mkdir, and echo. Covers practical examples, best practices, and common mistakes to avoid when organizing your Linux filesystem.

Linux Fundamentals

The Linux Filesystem Structure Explained

An introduction to the Linux filesystem structure, explaining the root directory, essential directories like /home, /bin, /etc, and /var, and basic navigation concepts. Covers absolute vs relative paths and hidden files for Linux beginners.

Linux Fundamentals

Navigating the Linux Filesystem

Learn the fundamentals of navigating the Linux filesystem, including directory structure, essential commands like pwd, ls, and cd, and understanding absolute vs relative paths. Perfect introduction for Linux beginners.

Linux Fundamentals

Your First Linux Commands

Learn the essential Linux commands every beginner needs: navigation (pwd, ls, cd), file operations (mkdir, cp, mv, rm), viewing files (cat, less, head, tail), and getting help (man). These fundamental commands form the foundation for all Linux command-line work.

Linux Fundamentals

Opening and Using the Linux Terminal

Learn how to open and use the Linux terminal, including navigation basics, keyboard shortcuts, and essential commands. This beginner-friendly guide covers the terminal interface, basic commands like pwd, ls, and cd, plus important safety tips.

Linux Fundamentals

Understanding the Linux Desktop vs the Terminal

Learn the fundamental differences between Linux's graphical desktop environment and the terminal command line interface. Understand when to use each approach and how they complement each other in daily Linux usage.

Linux Fundamentals

Using Windows Subsystem for Linux (WSL)

Learn how to install and use Windows Subsystem for Linux (WSL) to run a full Linux environment on your Windows machine. This guide covers installation, basic usage, file system integration, and essential commands for getting started with Linux development on Windows.

Linux Fundamentals

Running Linux in a Virtual Machine with VirtualBox

Learn how to safely run Linux using VirtualBox virtual machines. This guide covers installation, configuration, and setup of Ubuntu in a VM for risk-free Linux learning.

Linux Fundamentals

How to Install Ubuntu Linux for Beginners

A comprehensive beginner's guide to installing Ubuntu Linux, covering system requirements, creating installation media, and the complete installation process from download to first boot.

Linux Fundamentals

Linux Distributions Explained: Which One Should You Use

Linux distributions are different flavors of the same operating system, each with unique features and target audiences. Ubuntu, Linux Mint, Pop!_OS, and Fedora are excellent choices for beginners, with Ubuntu being the most beginner-friendly option.