SysAdmin

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.

Environment variables play a significant role in setting up the system and shell configuration at the beginning of every shell session. This tutorial explains how to view, set, manage, and unset environment variables in Linux.

Proxy servers are commonly found on local business networks, providing an additional security layer. Among personal users, they are popular because they help increase privacy and speed. This tutorial shows how to set up a proxy on Ubuntu 20.04.

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.

External tables in Hive are used to access and query data stored outside of a database. Follow the steps of this tutorial to learn how to create, query and drop external tables.

Arch Linux is among the most versatile and lightweight Linux distributions. This guide takes you step-by-step through the process of installing Arch Linux on your computer.

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.

KVM (short for Kernel-based Virtual Machine) is a Linux kernel module which enables creating and running virtual instances of other operating systems on a Linux machine. Learn how to set it up in this simple tutorial.

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.