SysAdmin

This tutorial provides 20 most commonly used rsync commands for all data synchronization scenarios.

Learn how to install Git on Mac with four different installation approaches and get started with using the system. Configure Git and see how to track and commit changes.

The ip command is a Linux tool for system and network administrators used for configuring network interfaces. Learn about the important operations the ip command can perform.

UFW is a simple interface implemented on top of iptables that provides an easier way to configure a firewall. Use it to define rules of communication to and from a server and ensure your Ubuntu is protected.

This detailed guide shows you how to download and install Hadoop on a Ubuntu machine. It also contains all the configuration files you need to set up Hadoop in a single-node cluster.

DNS cache can be corrupted for a number of different reasons, including network attacks or viruses. When that happens, IP address mapping becomes corrupted for certain popular websites. Learn to clear DNS cache on your system and resolve potential issues.

Composer is an application that tracks dependencies for a project, allowing you to specify a set of libraries for a specific project. It identifies the versions and dependencies and installs them to the project. This guide will help you install and get started with Composer in Ubuntu.

This guide covers practical SSH commands such as specifying a username for your connection, using a different port number, generating SSH key pairs, and much more.

This tutorial covers the use of several networking tools and utilities for pinging a specific port number. Even though the primary use of the ping command does not involve ports, it can be used in order to check if a port is open or not by trying to establish a connection with it.

This tutorial shows you how to install, configure, and perform basic commands in Apache Hive. Improve your Hadoop cluster by allowing it to communicate with relational databases conveniently.