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510 Posts
  • Published Tutorial

    SSH Essentials: Working with SSH Servers, Clients, and Keys

    SSH, or secure shell, is the most common way of connecting to and administering remote Linux servers. In this cheat sheet-style guide, we'll cover some of the basic options and configuration sets you may want to use.
    By Justin Ellingwood Security Linux Basics Networking System Tools
  • Published Tutorial

    How To Use Nmap to Scan for Open Ports

    Nmap is a great tool for discovering the network services and ports that your server is exposing to the network. In this guide, we will discuss some basic information about networking ports and how you can use nmap t...
    By Justin Ellingwood Linux Basics System Tools Security Monitoring
  • Published Tutorial

    How To Edit the Sudoers File

    The sudo command is useful for executing commands with privileges usually outside of the scope of your user. This guide will discuss how to edit the configuration file in order to customize the way sudo functions.
    By Justin Ellingwood, Brian Boucheron Linux Basics Ubuntu CentOS Security
  • Published Tutorial

    Recommended Security Measures to Protect Your Servers

    When setting up infrastructure, getting your applications up and running will often be your primary concern. However, making your applications to function correctly without addressing the security needs of your infras...
    By Justin Ellingwood, Lisa Tagliaferri, Jamon Camisso, dbrian Security Firewall Conceptual Networking VPN
  • Published Tutorial

    How to Get Started with FreeBSD

    FreeBSD is a secure, high performance operating system that is suitable for a variety of server roles. In this guide, we will cover some basic information about how to get started with a server running FreeBSD 11.2.
    By Justin Ellingwood, Mark Drake Getting Started Solutions FreeBSD
  • Published Tutorial

    Using Grep & Regular Expressions to Search for Text Patterns in Linux

    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...
    By Justin Ellingwood, Brian Hogan Linux Basics Linux Commands
  • Published Tutorial

    How To Use the AWK language to Manipulate Text in Linux

    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...
    By Justin Ellingwood, Brian Hogan System Tools Linux Basics Linux Commands
  • Published Tutorial

    How To Serve Flask Applications with uWSGI and Nginx on Ubuntu 18.04

    In this guide, we will be setting up a simple Python application using the Flask microframework on Ubuntu 18.04. The bulk of this article will be about how to set up the uWSGI application server to launch the applicat...
    By Justin Ellingwood, Kathleen Juell Python Python Frameworks Nginx Ubuntu Ubuntu 18.04
  • Published Tutorial in Series: Using Sed

    Intermediate Sed: Manipulating Streams of Text in a Linux Environment

    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...
    By Justin Ellingwood, Brian Hogan Linux Basics Linux Commands
  • Published Tutorial in Series: Using Sed

    The Basics of Using the Sed Stream Editor to Manipulate Text in Linux

    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.
    By Justin Ellingwood, Brian Hogan Linux Basics Linux Commands
  • Published Tutorial

    How To Install Nginx on Ubuntu 18.04

    Nginx is one of the most popular web servers in the world and is responsible for hosting some of the largest and highest-traffic sites on the internet. It is more resource-friendly than Apache in most cases and can b...
    By Justin Ellingwood, Kathleen Juell Nginx Ubuntu 18.04
  • Published Tutorial

    How To Install and Configure an SNMP Daemon and Client on Ubuntu 18.04

    SNMP stands for simple network management protocol. It is a way that servers can share information about their current state, and also a channel through which an administer can modify pre-defined values. In this guide...
    By Justin Ellingwood, Vadym Kalsin Ubuntu 18.04 Networking System Tools
  • Published Tutorial

    How to Use Ansible Roles to Abstract your Infrastructure Environment

    This tutorial will explore how to create roles with templates and static files. Once you are familiar with the fundamentals of building roles, we'll use Ansible Galaxy (https://galaxy.ansible.com/) to incorporate comm...
    By Justin Ellingwood, Jamon Camisso Configuration Management Ubuntu Ansible
  • Published Tutorial

    How To Install WordPress with OpenLiteSpeed on Ubuntu 18.04

    This guide goes over the process of installing and setting up a WordPress instance on Ubuntu 18.04 using the OpenLiteSpeed web server. Because both WordPress and OpenLiteSpeed can be administered through a web browser...
    By Justin Ellingwood, Mark Drake WordPress Ubuntu 18.04 Miscellaneous Control Panels Ubuntu
  • Published Tutorial

    How To Install the OpenLiteSpeed Web Server on Ubuntu 18.04

    OpenLiteSpeed is an optimized open source web server that can be used to manage and serve sites. In this guide, we'll demonstrate how to install and configure OpenLiteSpeed on an Ubuntu 18.04 server.
    By Justin Ellingwood, Brian Boucheron Ubuntu Ubuntu 18.04 Control Panels Miscellaneous
  • Published Tutorial in Series: From Containers to Kubernetes with Django

    How to Build a Django and Gunicorn Application with Docker

    Interested in Django but not sure where to start with Docker? This tutorial will walk you through first steps: modifying a sample Django application to work in a container-based environment, and building a container i...
    By Justin Ellingwood, Hanif Jetha Django Ubuntu 18.04 Applications Docker PostgreSQL Python Databases
  • Published Tutorial

    How To Install Apache Tomcat 9 on Debian 10

    Apache Tomcat is a web server and servlet container that is used to serve Java applications. Tomcat is an open source implementation of the Java Servlet and JavaServer Pages technologies, released by the Apache Softwa...
    By Justin Ellingwood, Hanif Jetha Debian 10 Debian Java
  • Published Tutorial series

    How to Install Node.js and Create a Local Development Environment

    Node.js (https://nodejs.org/) is a JavaScript platform for general-purpose programming that allows users to build network applications quickly. By leveraging JavaScript on both the front and backend, Node.js makes dev...
    By Brian Hogan, Brennen Bearnes, Kathleen Juell, Justin Ellingwood and Brian Boucheron Node.js Development Ubuntu 18.04 Debian Debian 10 Ubuntu 16.04 Debian 9 JavaScript CentOS Ubuntu Ubuntu 20.04 CentOS 8
  • Published Tutorial

    How To Set Up Django with Postgres, Nginx, and Gunicorn on Debian 10

    Django is a powerful web framework that can help you get your Python application or website off the ground. Django includes a simplified development server for testing your code locally, but for anything even slightly...
    By Justin Ellingwood, Hanif Jetha Django Python Python Frameworks Databases PostgreSQL Nginx Debian 10
  • Published Tutorial

    How To Install the Latest MySQL on Debian 10

    MySQL is a prominent open source database management system used to store and retrieve data for a wide variety of popular applications. MySQL is the M in the LAMP stack, a commonly used set of open source software tha...
    By Justin Ellingwood, Brian Boucheron, Hanif Jetha MySQL Databases Debian 10