SysAdmin

Read about the most commonly used netstat commands for Linux and see examples of their usage.

Find a list of all MySQL date functions in this helpful article. Learn what each function does and how to use it through the practical examples.

Passwords are the most important feature of security. This article explains and shows examples of how to use the passwd command in Linux to manage passwords for accounts.

Windows uses environment variables to set up and run processes. This tutorial goes over different ways to set, list, and unset environment variables in Windows.

The software in Linux is traditionally organized in repositories that contain applications and all the dependencies necessary to run them. However, there are also some alternate ways of software deployment. This article compares the Snap packaging system and the APT package manager.

This article gives a step-by-step guide on how to install the VirtualBox extension pack using a GUI or a CLI in Windows, macOS or Linux. Get insight into some of its features.

Need a reference sheet for all the important MySQL commands? Check out this MySQL Commands article which includes a downloadable MySQL cheat sheet in PDF format.

Environment variables store values that help build the system environment and run processes.
In this tutorial, learn how to set, view, and unset environment variables in macOS.

The ifconfig command is a tool for network interface management that is used to enable/disable interfaces, manage IP addresses, netmasks, MAC addresses, etc. This tutorial shows how to install and use the ifconfig command on CentOS 7.

The umask command on Linux lets you interact with your system's default permissions and fine-tune permissions for new files and folders.
This tutorial shows you what umask is, how it works, and how best to use it.