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Articles on Trending Technologies
Technical articles with clear explanations and examples
How do I Zip/Unzip on the Unix Command Line
Zipping and unzipping files is a fundamental practice in Unix/Linux systems for file compression and archiving. We compress files to save disk space and bundle multiple files into a single archive for easier transfer and storage. When working with compressed archives, understanding both compression and extraction commands is essential for effective file management in Unix environments. Installing zip and unzip Commands First, ensure that the zip and unzip utilities are installed on your system: sudo apt install zip unzip Basic zip and unzip Operations Let's start with creating some sample files to ...
Read MoreConsistency Semantics for File Sharing
File-sharing services have become an integral part of modern communication and collaboration. These services allow users to share files with others, enabling them to work together on projects and exchange information. However, with multiple users accessing and updating the same file simultaneously, the problem of data consistency arises. Data consistency refers to the correctness and reliability of data, ensuring that all users see the same view of the data at all times. Consistency semantics is a set of rules that define how data is accessed and updated by different users in a distributed system. It ensures that all users ...
Read MoreTop 5 Features of Using Docker Swarm
Docker Swarm is a powerful container orchestration tool that manages multiple Docker containers across different hosts. It allows developers and IT teams to seamlessly deploy, scale, and manage containerized applications by abstracting the complexity of managing multiple containers and hosts into a simple, unified interface. Docker Swarm transforms a cluster of Docker nodes into a single virtual system. It groups containers together using the concept of services to construct applications, while providing load balancing and automatic container recovery during failures. Its straightforward setup works on both on-premises systems and cloud infrastructure, making it an accessible solution for container orchestration. ...
Read MoreHow to Generate a Self-Signed Certificate for Kubernetes?
Self-signed certificates provide a cost-effective way to establish secure communication between Kubernetes components such as the API server, etcd, and kubelets. While not signed by a trusted Certificate Authority (CA), they offer encryption for internal cluster communication and development environments. What are Self-Signed Certificates? A self-signed certificate is a digital certificate that is signed by its own private key rather than by a trusted Certificate Authority. In Kubernetes, these certificates secure communication channels between cluster components, ensuring data integrity and confidentiality during transmission. Generating a Self-Signed Certificate Step 1: Generate a Private Key First, create ...
Read MoreHow to grep multiline search patterns in Linux?
In Linux, searching for multiline patterns requires special techniques beyond the basic grep command. While grep is designed primarily for single-line pattern matching, we can use various approaches and tools to search across multiple lines effectively. The grep command in Linux is used to filter searches in a file for a particular pattern of characters. It displays lines that contain the pattern we are trying to search, where the pattern is referred to as a regular expression. Basic Grep Syntax grep [options] pattern [files] Common options include − -c : Count of ...
Read MoreCreating a Temporary File in Linux
In Linux, it is often necessary to create temporary files for various purposes, such as storing intermediate data during processing or storing configuration information for a script. Temporary files are usually created in the /tmp directory, which is a standard location for storing temporary files on most Linux systems. The mktemp Command The most common and secure method to create temporary files in Linux is using the mktemp command. This command creates a unique temporary file with proper permissions and prints the file name to the console. Syntax mktemp [options] [template] The template ...
Read MoreBash HereDoc Tutorial With Examples
If you're a Linux or Unix user, you're probably familiar with Bash, the command-line shell that's commonly used on these systems. Bash has a lot of powerful features that can make working on the command line much more efficient, and one of those features is called a HereDoc. In this tutorial, we'll explain what a HereDoc is, how it works, and give you some examples of how you can use it in your Bash scripts. What is a HereDoc? A HereDoc, short for "Here Document, " is a way to include a block of text within a Bash ...
Read MoreConvoy Effect in FCFS
In computer operating systems, scheduling algorithms play a crucial role in managing the execution of multiple processes. The First-Come-First-Serve (FCFS) scheduling algorithm follows a sequential order in executing processes as per their arrival time in the system. Although FCFS is straightforward and easily implementable, it may result in the Convoy Effect, where a resource-intensive process monopolizes system resources and creates a backlog of smaller processes, causing delays and inefficiencies. First Come First Serve (FCFS) Scheduling First-Come-First-Serve (FCFS) is a non-preemptive scheduling algorithm where processes are executed in the order they arrive in the ready queue. When a process ...
Read More10 7zip (File Archive) Command Examples in Linux
If you're a Linux user, you probably deal with file archives frequently. Whether you're sending files to someone, backing up data, or just organizing your files, compressing them into a single file archive can save a lot of space and make things easier to manage. One tool you can use for this purpose is 7zip. In this article, we'll cover 7zip command examples in Linux that you can use to compress and extract files in various ways. What is 7zip? 7zip is a free and open-source file archiver, similar to WinZip or WinRAR on Windows. It was developed ...
Read MoreHow to Generate SSH Key in Windows 10?
SSH (Secure Shell) is an encryption protocol that provides a secure connection between two computers over an insecure network, such as the internet. It allows users to remotely and securely access and control another computer or server. SSH works by encrypting all data sent between the two computers, including any usernames and passwords used to log in. In order to establish a secure SSH connection between two computers or servers, SSH keys are necessary. An SSH key is a pair of cryptographic keys − one public and one private. The private key is kept on the user's local ...
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