SysAdmin

How to Fix the "python: command not found" Error

July 13, 2023

This tutorial provides multiple solutions for resolving the python: command not found error in Linux. The solutions include installing Python and editing symlinks and PATH variables.

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How to Use Shebang in Bash Scripts


The shebang line is the first line of a script that instructs the OS which interpreter to use to execute the script. This tutorial shows how to use the shebang line in Bash.

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How to Check Open Ports in Linux

July 12, 2023

Applications and services use listening ports to listen for incoming network requests. Each listening port is tied to an IP address and a communication protocol such as TCP or UDP. This article will teach you how to check for open listening ports on a Linux system using multiple Linux networking tools.

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How to Unzip BZ2 File

July 11, 2023

BZ2 files have higher compression rates and relatively low decompression speeds. This simple step-by-step guide will show you how to unzip BZ2 files on Linux and Windows.

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How to Change Git Commit Message


Git is a version control system that allows users to track changes in their code. One of the available features is the ability to change a Git commit message, and this step-by-step guide shows how to do that.

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Intel Xeon Scalable Processors - an Overview

July 6, 2023

Intel launched the fourth generation of their Intel Xeon Scalable processor series in Q1 2023, with a slew of improvements in performance, efficiency, and security. This article will review all the previous generations of Xeon Scalable processors and discuss the fourth generation's important features and impact.

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How to Declare and Access Associative Array in Bash


Bash associative arrays are a powerful way to store and retrieve data with key-value pairs. In this article, you will learn how to declare, access, and work with associative arrays in Bash.

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How to Run Linux Commands in Background

July 5, 2023

Executing Linux commands in the background allows users to avoid waiting for one process to complete before entering another command. This guide explains different ways to run Linux commands in the background.

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How to Install Zsh on Ubuntu


The Z shell is an extended Bourne shell that offers numerous improvements and customization options. This tutorial shows how to install and configure Zsh on Ubuntu.

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How to Configure a Firewall with GUFW

June 29, 2023

The GUFW is the graphical user interface for the UFW firewall. In this guide, you will learn how to install and use the simple program to manage your system's firewall.

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