Linux on Alienkrishn Tutorials !

🚀 SLURM HPC Cluster Setup on Debian: Complete Guide

Sat, 08 Aug 2026 00:00:00 +0000

Ever wondered how research labs run thousands of jobs at once? 🤔 Welcome to the world of HPC (High Performance Computing)! In this guide, I’ll walk you through building your very own SLURM cluster on Debian — from why you’d want one, to the full controller setup, adding compute nodes, and exposing everything through a REST API and a web dashboard. Let’s get computing! 🖥️

What is SLURM? 🤨

SLURM (Simple Linux Utility for Resource Management) is the most widely used open-source workload manager in the world of supercomputing. It’s installed on the majority of the world’s top 500 supercomputers and powers massive research clusters at universities and national labs.

Understanding the `sed` Command in Unix/Linux 🖥️

Tue, 11 Feb 2025 20:05:39 +0000

The sed command, which stands for Stream Editor, is a powerful and versatile tool used for parsing and transforming text in Unix and Linux environments. It allows users to perform basic text transformations on an input stream (a file or input from a pipeline). This blog post will cover the basics of sed, its syntax, common use cases, and examples. 📖

1. Basic Syntax of `sed` 🔍

The basic syntax of the sed command is as follows:

📦 The Tar Utility: An In-Depth Overview

Fri, 07 Feb 2025 17:11:57 +0000

The tar utility is a commonly utilized tool in Unix-like operating systems for creating and manipulating archive files. Its name stands for “tape archive,” and it is frequently employed for tasks such as data backup, file compression, and bundling multiple files into one archive. In this article, we will delve into the tar command, discussing its syntax, available options, practical usage, and real-world applications.

What is the Tar Utility? 🤔

The tar utility enables users to generate, extract, and manage archive files effectively. By aggregating several files into a single file, it simplifies the processes of transferring, storing, or backing up data. While tar doesn’t compress files on its own, it can work alongside compression tools like gzip and bzip2 to reduce file sizes.

🔍 The Grep Command: A Comprehensive Guide

Fri, 07 Feb 2025 17:07:59 +0000

The grep command is a powerful and widely used utility in Unix-like operating systems for searching text using patterns. It is an essential tool for developers, system administrators, and anyone who works with text files. In this blog post, we will explore the grep command in detail, covering its syntax, options, usage, and practical applications.

What is the Grep Command? 🤔

grep stands for “Global Regular Expression Print.” It searches through files or standard input for lines that match a specified pattern and prints those lines to standard output. It supports basic and extended regular expressions, making it a flexible tool for searching text.

The Echo Command

Thu, 06 Feb 2025 11:38:13 +0000

🖥️ The Echo Command: A Comprehensive Guide

The echo command is a fundamental and versatile tool in Unix-like operating systems. Used primarily in shell scripts and command-line interfaces, it displays text or outputs data to the terminal. This blog post will provide an in-depth exploration of the echo command, covering its syntax, options, use cases, and best practices.

What is the Echo Command? 🤔

The echo command is used to print text or the value of variables to the standard output, typically the terminal screen. It can also write output to files when combined with redirection.