SysAdmin

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 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.

The Kubernetes command-line tool, kubectl, allows you to control Kubernetes by carrying out HTTP requests to the Kubernetes API. This reference guide provides a list of the most common kubectl commands, along with a handy, downloadable cheat sheet.

CentOS 8 was released in 2019 and brought promising features to the popular Linux distro. Although it had an EOL scheduled for 2029, it was cut short with RHEL ending support of CentOS 8 in December 2021. Learn more about the sudden change and what to expect in the future.

The main advantages of setting up a Minecraft server with dedicated resources are improved performance, full use of resources and bandwidth, control over mods and plugins, and better security.

Formatting and mounting disk partitions in Linux is common because partitions cannot be used without this process. In this tutorial you will learn how to format and mount disk partitions with ext4, FAT32, or NTFS file systems.

This article shows you numerous ways to test network speed in Linux via CLI. Learn how to install and use 9 online tools to test internet speed from the command prompt window,

When a remote repository moves to another host or a team member stops working on a project, the related git remote pointer may not be needed anymore. This tutorial shows you how to remove a git remote from your machine.

All Linux distributions come with a predefined kernel. However, they are usually outdated. Follow this step-by-step guide to learn how to build a Linux kernel from scratch.

NFS is a Linux file sharing system, allowing users to view, store, share or update files on remote computers. This tutorial covers simple steps to install and set up NFS on your network.