Linux Basics

Introduction> Introduction # Getting familiar with the command line is the first step towards utilizing the power of the Linux server platform. It is also an essential prerequisite for basically all server-related activities that you may wish to do within this environment.

Introduction FTP, short for File Transfer Protocol, is a network protocol that was once widely used for moving files between a client and server. It has since been replaced by faster, more secure, and more convenient ways of delivering files.

Introduction> Introduction # SSH, or secure shell, is an encrypted protocol used to administer and communicate with servers. When working with a Debian server, chances are you will spend most of your time in a terminal session connected to your server through SSH.

Introduction> Introduction # One problem users run into when first learning how to work with Linux is how to find the files they are looking for. This guide will cover how to use the aptly named find command.

Introduction> Introduction # When you first create a new server, there are a few configuration steps that you should take early on as part of the basic setup. This will increase the security and usability of your server and will give you a solid foundation for subsequent actions.

Introduction> Introduction # Everyone has problems with their web server or site at one time or another. Learning where to look when you come across a problem and which components are the likely culprits will help you fix these problems as quickly and robustly as possible.

Status: Deprecated> Status: Deprecated # This article covers a versions of Ubuntu and CentOS that are no longer supported. If you currently operate a server running Ubuntu 12.04 or CentOS 6, we highly recommend upgrading or migrating to a supported version.

Introduction> Introduction # When you first start using a fresh Linux server, adding and removing users is often one of the first things you’ll need to do. In this guide, you will learn how to create user accounts, assign sudo privileges, and delete users on a CentOS 7 server.

Introduction> Introduction # The Ubuntu operating system’s latest Long Term Support (LTS) release, Ubuntu 18.04 (Bionic Beaver), was released on April 26, 2018. This guide will explain how to upgrade an Ubuntu system of version 16.

Introduction> Introduction # SSH is a secure protocol used as the primary means of connecting to Linux servers remotely. It provides a text-based interface by spawning a remote shell. After connecting, all commands you type in your local terminal are sent to the remote server and executed there.

Status: Deprecated> Status: Deprecated # This article covers a version of Ubuntu that is no longer supported. If you are currently operate a server running Ubuntu 12.04, we highly recommend upgrading or migrating to a supported version of Ubuntu:

Introduction> Introduction # One essential tool to master as a system administrator is SSH. SSH, or Secure Shell, is a protocol used to securely log onto remote systems. It is the most common way to access remote Linux servers.

Introduction> Introduction # Rsync, which stands for remote sync, is a remote and local file synchronization tool. It uses an algorithm to minimize the amount of data copied by only moving the portions of files that have changed.

Status: Deprecated> Status: Deprecated # This article covers a version of CentOS that is no longer supported. If you are currently operating a server running CentOS 6, we highly recommend upgrading or migrating to a supported version of CentOS.

Introduction> Introduction # The redirection capabilities built into Linux provide you with a robust set of tools to optimize many workflows. The “Unix philosophy” of software development was to make tools that each do one thing well, and this philosophy has been carried forward to modern command-line tools, which are individually powerful, and exponentially more so when combined.

Introduction> Introduction # Linux is a family of free and open-source operating systems based on the Linux kernel. Operating systems based on Linux are known as Linux distributions or distros. Examples include Debian, Ubuntu, Fedora, CentOS, Gentoo, Arch Linux, and many others.

Introduction> Introduction # Understanding networking is a fundamental part of configuring complex environments on the internet. This has implications when trying to communicate between servers efficiently, developing secure network policies, and keeping your nodes organized.

Introduction> Introduction # As you manage Linux servers, you’ll spend quite a bit of time using the command line. For most people, this means spending a lot of time with the Bash shell.

Status: Deprecated> Status: Deprecated # This article covers a version of CentOS that is no longer supported. If you are currently operating a server running CentOS 6, we highly recommend upgrading or migrating to a supported version of CentOS.

Introduction> Introduction # One of the easiest way of increasing the responsiveness of your server and guarding against out of memory errors in your applications is to add some swap space.