SysAdmin

This step-by-step guide shows how to install R from Ubuntu and CRAN repositories.

This guide shows several different methods for truncating a file in Linux. See concrete examples and get started with file management in Linux.

This tutorial shows how to set a temporary or permanent environment variable using the Z shell, and print the variable values.

This article explains how to fix the wget: command not found error. It contains instructions for installing Wget on multiple Linux distributions.

The bash eval command evaluates and executes strings as shell commands. This guide shows how to use the eval command in Bash.

This guide utilizes examples of Bash scripts to show how you can use different operators to increment and decrement a variable in Bash.

Linux swap files enable managing memory-intensive workloads by moving inactive files from RAM to a swap file. Learn how swap space works and how to create Linux swap files.

This guide explains how to use the Bash shell to append text to an existing file without overwriting its contents.

This article explains how to install and downgrade to previous Node.js versions using the nvm tool.

If the software you want to install comes in a form of a deb package, you may be wondering how to extract it. This article shows you several different ways of dealing with deb packages. Find all the steps you need to take to install deb packages, along with how to remove deb packages after installing.