HOW-TOs

How to Use Sar (System Activity Reporter)

In this article, we're going to take a look at the System Activity Reporter, also known as the sar command. This command will help us with seeing a historical view of the performance of our server. You'll see examples of installing it, running it manually, and more. Let's get started!

How to Use the rsync Command

One of my favorite utilities on the Linux command-line, and block storage is one of my favorite features on Linode's platform, so in this article I get to combine both of these together - because what I'm going to be doing is show you how to use rsync to copy data from one server to another, in the form of a backup. What's really cool about this, is that this example will utilize block storage.

How To Install Nextcloud On An Ubuntu Server

This article will walk you through the manual installation method. While this method has more steps, by the end you'd have built your very own Nextcloud server from scratch, which will be not only a valuable learning experience - you'll become intimately familiar with the process of setting up Nextcloud. Let's get started!

The Echo Command

In this article, we're going to look at the echo command, which is useful for showing text on the terminal, as well as the contents of variables. Let's get started!

Everything You Need to Know about Linux Input-Output Redirection

Are you looking for information related to the Linux input-output redirection? Then, read on. So, what’s redirection? Redirection is a Linux feature. With the help of it, you are able to change standard I/O devices. In Linux, when you enter a command as an input, you receive an output. It’s the basic workflow of Linux.

How to Use the VI Editor in Linux

If you’re searching for info related to the VI editor, this article is for you. So, what’s VI editor? VI is a text editor that’s screen-oriented and the most popular in the Linux world. The reasons for its popularity are 1) availability for almost all Linux distros, 2) VI works the same throughout multiple platforms, and 3) its user-friendly features. Currently, VI Improved or VIM is the most used advanced counterpart of VI.

Primer to Container Security

Containers are considered to be a standard way of deploying these microservices to the cloud. Containers are better than virtual machines in almost all ways except security, which may be the main barrier to their widespread adoption. This article will provide a better understanding of container security and available techniques to secure them. A Linux container can be defined as a process or a set of processes running in the userspace that is/are isolated from the rest of the system by different kernel tools.

How to Install and Uninstall KernelCare

In my previous article, I described what KernelCare is. In this article, I’m going to tell you how to install, uninstall, clear the KernelCare cache, and other important information regarding KernelCare. In case you’re yet to know about the product, here’s a short recap. KernelCare provides automated security updates to the Linux kernel. It offers patches and error fixes for various Linux kernels. So, if you are looking for anything similar, you have landed upon the right page. Let’s begin without further ado.

What’s KernelCare?

This article explains all that you need to know about KernelCare. But before studying about KernelCare, let’s do a quick recap of the Linux kernel. It’ll help you understand KernelCare better. The Linux kernel is the core part of Linux OS. It resides in memory and prompts the CPU what to do. Now let’s begin with today’s topic which is KernelCare. And if you’re a system administrator this article is going to present valuable information for you.

Creating a Modern Website with Ghost

Ghost is free and open-source web server software that you can use to host a website. It’s a unique and elegant web publishing platform. In this article we will explore all that the Ghost Platform provides such as a modern and sleek interface where you can publish articles, newsletters, and subscription-based content.

Simple Network Management Protocol - Not As Simple As You Would Suggest

The Simple Network Management Protocol (SNMP) has been an integral part of monitoring network environments since its introduction in 1988. It has established itself as the de facto standard in network monitoring. Many manufacturers support the protocol and have implemented an SNMP agent on their network devices. These agents allow monitoring solutions to query various data, such as bandwidth, CPU load, network interfaces, etc., without installing an additional agent on network equipment. 

The org-mode LaTeX exporter: LaTeX for non-TEXers

By: Pedro A. Aranda Gutiérrez This article shows how to configure and use the org-mode provided by Emacs to produce pretty documents. org is a multi-purpose structured text file format and Emacs can translate it to LaTeX files which, in turn, can be translated into pretty PDF documents, taking advantage of all the typesetting facilities provided by LaTeX. This is a compendium of tricks evolved out of the experience of working with Emacs, org-mode and LaTeX.

5 Distributions Of Linux To Consider For Your Server

Which distribution is right for your environment? In this article, we'll discuss some important concepts to keep in mind - and we'll go over the finer points of some of the more popular options. There's no shortage of opinions online regarding desktop distros, but in this article - we're going to focus on server deployments.

Three Ways To Improve Your Programming Skills

The ability to write code is a huge differentiator for every job role in an enterprise Linux environment. As an Operations and DevOps manager, I was constantly challenged to improve my team’s programming skills, and the team genuinely wanted to be more proficient. But how? Structured training is a standard answer: take a course! Our company, like many, invested enormously in learning resources. I’d sit with an engineer one-on-one and we’d ponder the online portal together, puzzling out the most appropriate Python learning path.

Design and Prototypical Implementation of an IRC Chat Server in Erlang OTP

Modern solutions must be designed resiliently to enable service provisioning during incidents. There are multiple solutions to develop high-available and reliable services that can be applied to various levels in a system’s architecture and design. Some programming languages are specifically designed to meet these challenges. The functional programming language Erlang provides inherent functionality to develop these resilient services. Therefore, this article presents the exemplary design and development of a communication service based on the Internet Relay Chat (IRC) protocol in Erlang to investigate its availability features.