The Linux Guide: From Basics to Advanced Concepts

Last Updated: November 2, 2023

A thorough exploration into the world of Linux. We will embark on a journey starting from foundational principles, moving seamlessly into advanced topics to deepen your understanding. Tackling challenges head-on, the ‘Troubleshooting’ section provides insights to resolve common Linux issues. And for those keen on managing and optimizing Linux systems, the ‘System Administration’ chapter delves into best practices and essential techniques.

The Linux Guide: From Basics to Advanced Concepts

Basics & Concepts

How To Find Files Based On Wildcard In Linux

Learn how to use the 'find' command in Linux to recursively search for files in current and subfolders using wildcards. Discover how to use the find command with the -nam... read more

e option, multiple wildcard patterns, and other criteria to efficiently locate specific files within your system.

Tutorial: Using Unzip Command in Linux

This article provides a detailed guide on how to use the unzip command in Linux for file extraction. It covers various topics such as basic usage, listing files in a zip ... read more

archive, extracting files with specific permissions, creating and encrypting zip archives, and troubleshooting common errors. Additionally, it explores real-world examples, best practices, performance considerations, and advanced techniques for using the unzip command effectively. With step-by-step instructions and code snippets, this tutorial is a valuable resource for both beginners and experienced Linux users.

How to Copy a Folder from Remote to Local Using Scp in Linux

A simple guide for using scp to copy folders from remote to local in Linux. This article provides step-by-step instructions on how to establish a secure connection, navig... read more

ate to the desired local directory, and copy the folder using scp. It also includes an example and an alternative method using rsync, as well as best practices to follow.

How to Apply Chmod 777 to a Folder and its Contents in Linux

Applying Chmod 777 permissions to a folder and its contents in Linux can be done easily by following a few simple steps. This step-by-step guide will walk you through the... read more

process, starting with opening the Terminal and navigating to the desired folder. Then, you'll learn how to apply the necessary permissions using the chmod 777 command. After that, you'll verify the permissions to ensure they have been successfully applied. The article also includes best practices to follow and an alternative approach using symbolic notation. With this guide, you'll be able to apply Chmod 777 permissions to a folder and its contents in Linux with ease.

Tutorial on Linux User Management: How to Create a User

User management is a crucial aspect of the Linux operating system, and this article provides a guide on creating and managing users. From adding users to groups and editi... read more

ng user information to deleting users and managing groups, this tutorial covers all the essential user management tasks. It also explores real-world examples, best practices, performance considerations, and advanced techniques for user management. Additionally, code snippets in Bash scripting, Python, and Perl are provided to demonstrate user creation, adding users to groups, and deleting users. Error handling in user management is also discussed to ensure smooth operations.

Using Linux Commands to Find File and Directory Sizes

Retrieving file and directory sizes in Linux is made simple with the du and ls commands. Learn how to use these commands to find the sizes of files and directories in a s... read more

pecific folder. Discover the best practices and tips for efficiently navigating and managing file sizes in Linux.

How to Sync Local and Remote Directories with Rsync

Learn how to use Rsync to synchronize local and remote directories in Linux with this step-by-step tutorial. Discover the installation and configuration process, as well ... read more

as the syncing mechanisms of Rsync. Explore use cases for backing up and migrating data, and learn about best practices for preserving file permissions and ensuring secure transfers. Dive into advanced techniques such as excluding files from sync and throttling data transfer rates. With code snippets and troubleshooting tips, this article provides a comprehensive guide to syncing directories with Rsync.

How to Alter the Echo Output Colors in Linux

This article provides a simple guide on modifying the output color of echo in Linux using bash color. It covers two methods: using ANSI escape sequences and using tput. T... read more

he article also includes best practices and additional considerations for altering echo output colors.

How to Terminate a Process on a Specific Port in Ubuntu

Terminating processes on specific ports in Ubuntu can be done easily using Linux commands. This guide provides step-by-step instructions on identifying the process runnin... read more

g on the port and terminating it. An alternative method using lsof is also discussed, along with best practices to ensure a smooth process termination.

How To Stop A Process Running On A Specific Port In Linux

Guide on terminating a process running on a particular port in Linux. Learn how to stop a process using the lsof and fuser commands. Additionally, find some useful notes ... read more

to enhance your understanding.

How to Post JSON Data with Curl in Linux

Posting JSON data with Curl in a Linux environment is made easy with this simple guide. From installing Curl to handling the response, this article provides step-by-step ... read more

instructions for effortlessly posting JSON data using Curl command. Along with best practices and tips, an alternative approach of using a file for JSON data is also explored. Ensure smooth data posting with Curl in Linux.

How To Recursively Grep Directories And Subdirectories

Learn how to use the grep command in Linux to search files in directories and subdirectories recursively. Understand the need for recursive grep, use the recursive grep c... read more

ommand, and explore advanced options and techniques. Discover reasons for using recursive grep, alternative ideas and suggestions, best practices, and how to ignore case sensitivity, display line numbers, search for whole words, exclude files or directories, and use regular expressions.

How to Use Find and Locate on Linux

Using Find and Locate commands on Linux can greatly enhance your file searching capabilities. This tutorial provides an introduction to these commands and their syntax, a... read more

s well as best practices for usage. You'll also find real-world scenarios and code snippets to help you master these commands and solve common errors. Additionally, advanced techniques using regular expressions and tips for searching by file name or type are covered. Whether you're a beginner or experienced Linux user, this article will equip you with the knowledge needed to search for files on Linux.

Using SSH to Connect to a Remote Server in Linux

This article provides a tutorial on using SSH to connect to a remote server in Linux. It covers topics such as the basics of SSH, generating and using SSH keys, configuri... read more

ng SSH with the config file, and various use cases and best practices for using SSH in real-world scenarios. Additionally, it explores performance considerations, advanced techniques like port forwarding and SSH tunnels, code snippets for key tasks, and error handling for connection and authentication issues.

How to Configure bashrc in Linux

Configuring the bashrc file in Linux is essential for customizing your Linux command line experience. This tutorial will guide you through the structure and syntax of bas... read more

hrc, how to access and edit it, and best practices for keeping it clean and organized. You'll also learn how to set up environment variables, create aliases, define functions, and use advanced techniques like conditional statements and looping. Real-world examples, code snippets, and error handling tips will help you master bashrc configuration and optimize your Linux workflow.

How To Find All Files With Text On Linux

Learn how to search for specific text in files on Linux using simple commands. Find all files containing a text string easily and efficiently. Discover how to utilize the... read more

grep command and the find command along with grep to efficiently search for text in files. Explore the reasons for searching text in files, alternative ideas, and best practices to enhance your search capabilities.

How to Use SFTP for Secure File Transfer in Linux

Securely transferring files between a local machine and a remote server is essential in Linux environments. This article provides a step-by-step tutorial on using SFTP fo... read more

r secure file transfer. From setting up SFTP to configuring and securing connections, to real-world examples and best practices, this article covers all aspects of using SFTP in Linux. With code snippets and performance considerations, you'll learn how to automate file transfers and integrate SFTP with other systems. Whether you need to manage web server files or collaborate in a distributed team, this article will guide you in using SFTP for secure file transfer in Linux.

How to Use Grep Command in Linux Unix

Learn how to use the grep command in Linux Unix with this tutorial. From understanding the syntax and regular expressions to advanced techniques like context control and ... read more

output control, this article covers everything you need to know. Discover real-world examples, best practices, and code snippets that will enhance your grep skills. Whether you're analyzing log files, exploring a codebase, or filtering data, this article will guide you through the process. Improve your efficiency, optimize performance, and master the art of using grep in Linux Unix.

How to Use the Ls Command in Linux

Learn how to use the Ls command in Linux with this tutorial. From understanding the syntax and parameters to exploring real-world examples and advanced techniques, this a... read more

rticle covers everything you need to know about using the Ls command effectively. Whether you're a beginner or an experienced Linux user, this guide will help you navigate directories, sort files, analyze disk usage, handle errors, and more. Improve your command line skills and enhance your Linux experience with the Ls command.

Secure File Transfer with SFTP: A Linux Tutorial

Learn how to securely transfer files with a remote server using SFTP in Linux. This tutorial covers everything from installing and configuring SFTP to managing files and ... read more

directories, best practices for authentication and access control, monitoring and logging SFTP activity, real-world examples, performance considerations, advanced techniques, error handling, and code snippets for various SFTP operations. Whether you're a beginner or an experienced Linux user, this tutorial will help you master secure file transfer with SFTP.

How to Use Linux Commands

Learn how to use Linux commands with this tutorial. The article covers various topics including command line basics, manipulating files and directories, file viewing and ... read more

searching, file permissions and ownership, file backup and restoration, organizing the file system, automating file transfer, performance considerations, advanced techniques, error handling, networking commands, process and system control commands, remote computer control, securing your connection, monitoring network traffic, network troubleshooting, opening the terminal, navigating the file system, working with files and directories, and more.


Tutorial on Traceroute in Linux

Traceroute is a powerful command in Linux systems that allows you to trace the path of network packets from your computer to a destination. This tutorial provides a detai... read more

led guide on how to use traceroute in Linux, covering topics such as basic usage, real-world examples, best practices, advanced techniques, performance considerations, code snippets, and error handling. Whether you are a beginner or an experienced Linux user, this tutorial will help you understand and leverage the full potential of traceroute for troubleshooting network connectivity issues and optimizing network performance.

Displaying Images using Wget Bash Script in Linux

Learn how to display images in Linux using a wget bash script. This article covers everything from downloading an image with wget to displaying it in the terminal. Discov... read more

er alternatives to wget and explore the advantages of using a bash script for image display. With step-by-step instructions and additional resources, you'll be able to effortlessly pass the URL of an image to a bash script and display it in no time.

How to Continue a Bash Script Post cURL Command

When working with bash scripts in Linux, it's important to know how to continue your script after executing a curl command. This article will guide you through common tec... read more

hniques for handling curl output, checking response codes, passing variables, running multiple commands in parallel, handling errors, and more. With these best practices and syntax examples, you'll be able to enhance your bash scripts and streamline your workflow.

How to Set LD_LIBRARY_PATH in Linux

Setting the LD_LIBRARY_PATH environmental variable in Linux can be done in a few simple steps. This article provides a guide on how to set the LD_LIBRARY_PATH temporarily... read more

and permanently, as well as best practices and considerations to keep in mind. Whether you're a beginner or an experienced Linux user, this article will help you navigate the process efficiently and effectively.

How To Send A Header Using A HTTP Request With cURL

Including headers in a cURL call to send HTTP requests in Linux is a crucial skill for software engineers. This article provides a concise guide on how to accomplish this... read more

task effectively. The chapters cover the reasons behind this question, possible answers, best practices, and alternative ideas and suggestions. By following these step-by-step instructions, you can enhance your ability to send headers using an HTTP request with cURL.

Setting up an Intrusion Detection System on Linux

Setting up an intrusion detection system on Linux is essential for securing web applications. This step-by-step guide provides instructions on installing and configuring ... read more

a PHP intrusion detection system on Linux. Learn about the importance of intrusion detection systems, the key features to consider, and how they help in securing web applications. Discover common vulnerabilities that can be detected, compatible network-based intrusion detection systems, and the steps to configure and analyze logs. With this guide, you can protect your web applications on Linux.


Troubleshooting: Unable to Save Bash Scripts in Vi on Linux

Addressing the issue of saving bash scripts in Vi editor on Linux systems. Troubleshooting common issues with saving bash scripts in vi and understanding the vi editor an... read more

d its functionality.

Fixing the ‘Linux Username Not In The Sudoers File’ Error

Resolving the 'Linux: is not in the sudoers file' issue can be frustrating, but there are solutions available. This guide provides step-by-step instructions on how to add... read more

a user to the sudo group or edit the sudoers file to fix the error. Additionally, alternative ideas and best practices are discussed to help ensure a smoother Linux experience.

How to Fix ‘Undefined Reference to pthread_create’ in Linux

A guide to address the 'Undefined Reference to pthread_create' issue in Linux. This article covers checking for the pthread library installation, adding the -pthread link... read more

er flag, using the pthread library functions, and checking for other potential issues.

How to Fix Openssl Error: Self Signed Certificate in Certificate Chain on Linux

Resolving the OpenSSL error of self signed certificate in a certificate chain on Linux can be accomplished through two simple solutions. The first solution involves addin... read more

g the root certificate to the trusted certificate authorities, while the second solution entails disabling certificate verification in OpenSSL. By following these steps, you can ensure that your OpenSSL error is fixed and your certificate chain is secure.

System Administration

Creating Incremental Backups with Bash Scripts in Linux

Implementing incremental backups in Linux using bash scripts is a valuable skill for any system administrator or developer. This in-depth tutorial covers topics such as t... read more

he difference between full and incremental backups, creating backups using rsync in a bash script, advantages of using tar for incremental backups, scheduling backups with cron, specifying directories to backup, compression methods, using rsnapshot for incremental backups, creating hard links, excluding files or directories, and limitations or considerations. With step-by-step instructions, you'll gain the knowledge needed to efficiently implement incremental backups in Linux.

Using a Watchdog Process to Trigger Bash Scripts in Linux

Setting a watchdog process to trigger bash scripts in Linux can greatly enhance automation and monitoring capabilities. Learn how to create a watchdog process, trigger ba... read more

sh scripts, and explore common use cases and benefits of this approach. Discover the limitations and considerations, as well as how to monitor the execution of bash scripts triggered by a watchdog process. Additionally, explore how to trigger multiple bash scripts and alternatives to using a watchdog process in Linux.