PureVoltage Blog

  • Linux Basics: Using Bash Shell Scripting for Automation

    Linux Basics: Using Bash Shell Scripting for Automation

    TL;DR Bash shell scripting is a powerful tool for automating repetitive tasks on Linux systems. This article introduces basic concepts of Bash scripting and demonstrates how to write simple scripts for automation. Whether you need to run a sequence of commands, monitor system resources, or schedule backups, Bash scripting can make these tasks more efficient.…

  • Linux Basics: Understanding and Configuring Firewall Rules with iptables, ufw, and firewalld

    Linux Basics: Understanding and Configuring Firewall Rules with iptables, ufw, and firewalld

    Introduction Firewalls are essential for network security. In a Linux environment, several tools help in setting up and configuring these firewalls. This article will guide you through understanding firewall rules and demonstrate how to manage these rules using iptables, firewalld, and ufw. What is a Firewall? A firewall is a network security system that monitors…

  • Linux Basics: Working with tar, zip, and Other Compression and Archive Tools

    Linux Basics: Working with tar, zip, and Other Compression and Archive Tools

    Managing files and directories in Linux often involves compressing and decompressing archives. It’s an important skill, as it can save valuable disk space, make files easier to send, and can often be a necessity when installing software. This article explores how to work with archives and compression in Linux, using commands such as tar, gzip,…

  • Linux Basics: Disk Management and Partitioning using fdisk mkfs zfs df

    Linux Basics: Disk Management and Partitioning using fdisk mkfs zfs df

    In this article, we’ll delve into how to manage disk space, create and manage disk partitions, format partitions, and work with advanced filesystems like ZFS in Linux. Understanding and mastering these tasks are crucial when managing a Linux server, as it’s vital to monitor your available disk space, modify your disk layout as required, and…

  • Linux Basics: Working with the Linux Kernel and GRUB Bootloader

    Linux Basics: Working with the Linux Kernel and GRUB Bootloader

    The Linux kernel is the core component of the Linux operating system, and the GRUB bootloader is responsible for loading the kernel and starting the operating system. Understanding these two components is essential for system administration and troubleshooting. This article dives into the Linux kernel, modules, and the GRUB bootloader. TL;DR This guide explores the…

  • Linux Basics: Understanding the Linux Kernel and Modules

    Linux Basics: Understanding the Linux Kernel and Modules

    In this installment of our Linux Basics series, we will delve into the heart of the Linux operating system – the Linux kernel. We will explore what the kernel is, how to check its version, and how to manage kernel modules. What is the Linux Kernel? The Linux kernel, simply referred to as the kernel,…

  • Linux Basics: Managing Users and Groups using useradd usermod userdel

    Linux Basics: Managing Users and Groups using useradd usermod userdel

    As a Linux system administrator, one of your main tasks involves user and group management. In this guide, we’ll explain how to add, modify, delete, and manage users and groups using commands such as useradd, usermod, userdel, groupadd, and groupdel. Understanding User and Group Concepts Every user on a Linux system has a unique user…

  • Linux Basics: Network Configuration and Troubleshooting using ifconfig ip netstat

    Linux Basics: Network Configuration and Troubleshooting using ifconfig ip netstat

    TL;DR: This post introduces basic network commands and tools you can use to configure and troubleshoot your network in a Linux environment. You will learn how to use ifconfig, ip, netstat, ping, traceroute, and nslookup. Understanding Basic Network Commands 1. ifconfig ifconfig (interface configurator) is a traditional command-line tool used to configure, control, and query…

  • Linux Basics: Working with Text Files Using grep, sed, and awk

    Linux Basics: Working with Text Files Using grep, sed, and awk

    Introduction In our journey through the world of Linux, we’ve encountered various tools and techniques to manage and manipulate our files. Today, we’re delving into the fascinating realm of text processing. Three of the most potent tools in a Linux user’s arsenal are grep, sed, and awk. These command-line utilities, born in the era of…

  • Linux Basics: Scheduling Tasks with Cron or Crontab -e

    Linux Basics: Scheduling Tasks with Cron or Crontab -e

    Introduction Cron is a powerful job scheduler in Unix-like operating systems, including Linux, that allows you to schedule tasks (known as cron jobs) to run automatically at specific times or dates. This tutorial in our Linux Basics Series on PureVoltage.com will walk you through the steps of scheduling and managing jobs with cron and crontab.…