Linux Basics

20 Guides Available

How to Create Linux Symlinks

A symbolic link, or symlink, creates a name that references another file, directory, or other Linux file system object.

Remove Symbolic Links

Symbolic links (also known as symlinks) in Linux are special files that reference other files, directories, devices, or pipes.

9 Ways to Use the Ls Command in Linux

What is the ls Command in Linux?The ls command line utility lists all the files and directories under a specified directory.

Setting Filesystem Quotas on Ubuntu 22.04

In this guide, learn how to use quotas to limit the amount of disk space a user or group can use on a filesystem.

Step-by-Step Guide: How to Increase Swap Space in Ubuntu

Systems trying to run large, memory-intensive applications with limited RAM can run into serious issues. Operations might become very slow, and the application can sometimes freeze completely or crash with out-of-memory errors.

Mount a File System on Linux

Mounting or unmounting a file system on Linux is usually straightforward, except when it isn’t. This article teaches you how to mount and unmount file systems, as well as list available and currently mounted file systems.

Rename Files in Linux

Windows and macOS users often manage their files using the Graphical User Interface (GUI) file manager provided on their systems.

Copy Files and Directories in Linux

Copying a file is one of the most common Linux tasks. Ubuntu and other Linux distributions use the cp command to copy one or more files, and to copy entire directories.

Basic Linux Commands: A Beginner’s Guide

Both beginners and advanced users of Linux can benefit from a Linux command cheat sheet. If you need to use a command that isn’t part of your daily toolchain, or if you are coming from a non-Linux based operating system, a Linux command reference is what you need.

Navigate the Linux Terminal and File System

For users more familiar with a graphical user interface (GUI), the Linux command line interface can initially appear daunting.

Check and Clean a Linux System's Disk Space

Linux provides several built-in commands for analyzing and cleaning up your system’s disk space. This guide shows you how to use those commands to get a closer look at your disk usage and start freeing up space.

Write to a File From the Shell

When working from the command line, it can be convenient to write to files without the need to open a text editor like Nano, or Vim.

Restart a Linux Server from the Command Line

While your Linux server can run continuously for weeks or months, some configuration tasks may require a manual system reboot.

An Overview of the usermod Command and How It's Used

What is usermod? Tool Used to Modify a User’s Linux SettingsThe usermod command lets you change an existing Linux user’s settings.

Setting and Using Linux Environment Variables

Your Linux shell has access to an environment that stores configuration values and other information in environment variables.

Add and Remove sudo Access in Ubuntu

sudo (“su ‘do’” or “substitute user ‘do’”) allows a system administrator to delegate permissions to specific users on the machine.

Linux System Administration Basics

This guide presents a collection of common issues and useful tips for Linux system administration. Whether you’re new to system administration or have been maintaining systems for some time, we hope this collection of basic Linux commands will help you manage your system from the command line.

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