In Linux systems, environmental and shell variables are used to determine operating conditions for the shell. They can be passed down to child processes and can be used to set options and make certain information ava...

Finding files is a very common task on any operating system. The Linux "find" and "locate" commands can both be used to search for files on the filesystem. This guide will cover how to use these two tools to craft spe...

Grep is a tool used to search for specified patterns within text input using regular expressions. Regular expressions are a system for describing complex text patterns. Regular expressions are a powerful tool that c...

Linux may be daunting to learn about at first, but familiarising yourself with the operating system is easy. The basics are simple, and you'll learn skills to arm yourself with knowledge in the future.

In this tutorial, you will learn how to install and manage Supervisor on a Linux server.

As you administer servers, you will begin to spend a lot of time on the command line. Most likely, you will be using the bash shell. The bash shell includes a lot of commands and expansion capabilities to take advan...

The sed stream editor is a non-interactive line editor that can perform powerful editing operations on text streams or files. Learning to use sed well will allow you to transform text with great speed and flexibility.

Awk is a programming language and utility included in all Linux distributions that can be used to manipulate and process text files in a fine-grained manner. In this guide, we will discuss the basics of how to use aw...

Composer is a popular dependency management tool for PHP, created mainly to facilitate installation and updates for project dependencies.It will check which other packages a specific project depends on and install the...

In this guide, we'll talk about how bash, the Linux system, and your terminal come together to offer process and job control. In a previous guide, we discussed how...

Iterate through the files in a directory and run commands against them using shell scripting loops.

One of the most fundamental parts of working with databases is the practice of retrieving information about the data held within them. In relational database management systems, any operation used to retrieve informat...

Download files from a remote server to your local system from the command-line using the curl command.

This tutorial will provide users who are new to terminal environments with the basics of using a command-line interface, providing a primer for understanding how to use Linux cloud servers.

By default on many CentOS 8 installations, HAProxy is not configured to write its log output to a file. This quickstart tutorial will explain how to configure HAProxy logging with Rsyslog and SELinux rules by using a ...

Sockets are a way to enable inter-process communication between programs running on a server, or between programs running on separate servers. Communication between servers relies on network sockets, which use the Int...

Wget is a command-line tool that lets you download files and interact with REST APIs. In this tutorial, learn how to customize your download experience, interact with REST API endpoints, and create a Droplet on your D...

Generate universally unique identifiers from the command-line using the uuidgen command.

The sed stream editor can be used to perform complex editing operations with a minimal amount of instruction. The automated nature of sed makes it perfect for use in scripts and background processing. This article w...

In this guide, you will learn how to install and configure a Memcached server. You’ll also learn how to add authentication to secure Memcached using Simple Authentication and Security Layer (SASL). Finally, you’ll lea...