As a network engineer, you probably spend a lot of time thinking and planning your network infrastructure. You plan how computers will be linked, physically using specific cables but also logically using routing tables. When your network plan is built, you will have to implement every single link that you theorized on paper. In some…
When working on software projects, it is quite common for developers to add new files to their repositories. In some cases, you may want to change some of your existing files. In other cases, you may want to add untracked files to your repository. In both cases, you will need to use the same Git…
In one of our previous articles, we learnt how you can encrypt your entire root filesystem on Linux easily. However, in some cases, you may want to encrypt one simple partition that may store some of your important files. As you already know, encrypting your disks is crucial. If your laptop were to be stolen,…
DNS, short for the Domain Name System protocol, is used on Linux systems in order to retrieve IP addresses associated with names. For example, when you are performing a ping request, it is quite likely that you are using the DNS protocol to retrieve the server IP. In most cases, the DNS requests that you…
If you are working in a medium to big-sized company, it is quite likely that you are working with many other system administrators. As you are performing your sysadmin tasks, some users may try to connect to your server in order to perform their daily tasks. However, in some cases, you may find that something…
As a system administrator, you probably already know how important it is to encrypt your disks. If your laptop were to be stolen, even a novice hacker would be able to extract the information contained on the disks. All it takes is a simple USB stick with a LiveCD on it and everything would be…
When using Git, it is quite common for developers to add new files to their repositories during development. Most of the time, files are associated with commits. Developers often start by adding files to their staging area just before committing them to the Git repository. However, in some cases, you may want to undo a…
If you are a conscientious system administrator, you have probably already wondered how you can make your files secure. Nowadays, as system attacks get more and more frequent, it isn’t probably a bad idea to think about encrypting your files. On Linux, there are multiple of encrypting files, directories or filesystems : namely using the…
As a system administrator, you are probably dealing with a lot of services every day. On Linux, services are used for many different purposes. They may be used in order to start a SSH server on your machine or they can perform some operations on a specific hour or day. Whether you are using a…
On Linux, the root account is probably one of the most powerful accounts that there is. Considered the most privileged account on a Unix system, root can perform any tasks needed for system administration. Navigating a specific folder, killing any process or deleting a directory, root is so powerful that it has to be managed…
In Git, branches are commonly used in order to have a development separated from your main workflow. In software engineering teams, it is quite common to have a specific workflow implemented. You may choose for example to have one branch per major release or to have a branch in order to quickfix an issue. In…
If you use the Divi theme or Divi Builder, you’ll regularly work with modules. They are the building blocks within the theme that enable you to add page elements, style them, control them and utilize them to create beautiful websites. Trouble is, when you’re in the middle of designing or trying to navigate your way…
Recently, Google CEO Sundar Pichai was called to testify in front of Congress about potential bias in Google’s algorithms. This isn’t the first time Google has been accused of bias and likely will not be the last time. Google alleges there is no bias, yet many Conservatives argue that Google is biased against them. With…
Bounce rate is the percentage of visitors that take no further action after landing on a webpage, like clicking through to another page, leaving a comment, or adding an item to their cart. It’s a great metric to measure user engagement, but only if you know how to use it. In this article, you’ll learn:…
More people than ever are searching by voice. So it’s no surprise that the question on everyone’s lips is: ‘Hey Google, how do I optimize for voice search?’ It’s a fair question, but is it even possible? In this post, you’ll learn: search engine rather than searching by text. That might sound obvious, but the important…
Since its original launch in 2003, WordPress has evolved from a simple blogging tool into a powerful and popular website builder and a comprehensive CMS (content management system) used by about 38% of the websites on the web! Given its popularity, if your site needs to stand out from the crowd, you’ll need to create…
Most people approach affiliate keyword research all wrong. They look for low competition keywords, write a blog post, then shoehorn in as many affiliate links as possible. This approach tends to be lots of traffic, but no clicks, conversions, or revenue. Luckily, there’s a simple solution: find keywords with lots of searches that you can…
This tutorial focuses on how to create swap space on Ubuntu 20.04 using a swap partition or a swap file. For system administrators, it is quite common for servers to run out of RAM. In some cases, you may have launched too many programs or some of the programs are already using too many resources….
