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Atom is an open-source text and source code editor that was first released in 2014. It is created by GitHub and built on the Electron framework, which makes it easily extensible and customizable. Atom is designed to be a hackable editor, which means that it can be modified and configured to suit individual needs. In this article, we will explore Atom's features and capabilities, as well as how to use it for text and source code editing on Linux systems. What is Atom? Atom is a text and source code editor that was developed by GitHub, the ... Read More
A hybrid system in operating systems combines multiple kernel architectures to leverage the benefits of different approaches while minimizing their individual drawbacks. These systems integrate elements from monolithic kernels, microkernels, and layered architectures to achieve better performance, security, and modularity. Hybrid systems are designed to provide the performance advantages of monolithic kernels while maintaining the security and reliability of microkernels. They are commonly found in modern operating systems used in desktops, mobile devices, and servers. Architecture of Hybrid Systems Hybrid System Architecture User Applications ... Read More
When you are working on a large project with Docker, you need to go through certain phases of the development cycle. Maintaining a different dockerfile for each cycle such as build, release, testing etc. consumes significant resources and reduces productivity efficiency. In later versions of Docker, multi-stage Dockerfile functionality allows us to use multiple images in a single Dockerfile with the help of two particular commands − FROM and AS. How Multi-Stage Dockerfiles Work We can use multiple FROM commands combined with AS commands in our Dockerfile where the last FROM command builds the final image. All ... Read More
OpenSSH is an open-source tool that provides secure encrypted communication between different machines on a network. It is widely used in Linux-based systems as a way to securely access and manage remote servers. In this article, we will discuss how to install and configure OpenSSH server in Linux. Step 1: Checking if OpenSSH is Installed The first step in the installation process is to check whether OpenSSH is already installed on your Linux machine. To do this, open your terminal and type the following command − ssh -V If OpenSSH is already installed, the ... Read More
Operating system debugging and booting are two fundamental processes that ensure system reliability and initialization. Debugging helps identify and resolve system errors, while booting starts the computer from a powered-off state and loads the operating system into memory. Operating System Debugging Debugging is the systematic process of identifying, analyzing, and fixing errors in an operating system. Both hardware and software problems can be resolved through proper debugging techniques. When performance issues arise, debugging becomes essential to analyze system failures, locate error sources, and implement corrections. This process involves examining system logs, memory dumps, and performance metrics to ... Read More
Bash globbing is the process of using wildcard characters to match multiple filenames or paths in the shell. Bash provides several special characters that can be used for globbing, such as *, ?, and []. This feature allows you to perform operations on multiple files without having to specify each filename individually. The * character is a wildcard that can match zero or more characters in a filename or path. For example, the command ls * would list all files in the current directory, while the command ls *.txt would list all files with the .txt extension in the ... Read More
Docker containers provide an isolated environment for running applications. After installing Docker on your Linux machine, you can create custom images by starting with a base OS image and adding packages. This article demonstrates how to install packages inside a Docker container using Ubuntu as the base image. We'll install three essential packages: vim editor, Firefox, and Python 3.7. There are two approaches to accomplish this − using CLI commands step-by-step or creating a Dockerfile for automated builds. Method 1 − Step-by-Step CLI Approach Running the Base Ubuntu Container First, pull and run the Ubuntu image ... Read More
When using a Linux shell, it's essential to ensure that users are logged out when they are not actively using the system to maintain security and efficiency. This can be achieved by setting an automatic logout timer using the TMOUT shell variable. In this article, we will explore how to set up auto logout in Linux shell using TMOUT, its benefits, and how to modify the settings. What is TMOUT Shell Variable? TMOUT is an environment variable in Linux shell that defines the number of seconds a shell session can be idle before it is automatically logged out. ... Read More
As a Linux user, you probably find yourself navigating through your file system on a regular basis. Whether you're moving between directories to run commands or searching for specific files, you may have found that using the cd command can become cumbersome and time-consuming, especially if you have to navigate through multiple directories. Fortunately, there's a solution: Autojump. What is Autojump? Autojump is a smart command-line tool that allows you to quickly and easily navigate through your file system by learning your most frequently used directories. It's an intelligent alternative to the standard cd command, and it's especially ... Read More
The AWS CLI (Amazon Web Services Command Line Interface) is a powerful tool that enables users to manage AWS services, including EC2 (Elastic Compute Cloud) instances, directly from the command line. This unified tool provides an efficient way to automate cloud infrastructure management tasks and streamline operations without using the AWS Management Console. The AWS CLI allows users to automate complex tasks, manage EC2 instances programmatically, and integrate AWS operations into scripts and workflows. This makes it an essential tool for DevOps professionals and system administrators working with AWS infrastructure. Setting Up AWS CLI Before using the ... Read More