David Cao

This article is part of the following series.   In the world of Linux, file permissions are extremely important. They dictate who can access your files and what they can do with them. In this beginner’s guide, we will discuss…

In this blog post, we will discuss two ways to check the password expiration date for users in Linux. The first way is to use the chage command, and the second way is to use the passwd command. We will…

This article is part of the following series.   In Linux, the home directory is the default directory for user files. It’s also where your user profile is stored. If you need to change your home directory for any reason,…

In this step-by-step guide, we will show you how to add users in Linux. This process is different on every distro, so we have provided instructions for the most popular ones. We will also show you how to set up…

In this blog post, we will discuss 3 ways to check open ports in Linux. We will be using the command line to do this, so if you are not familiar with that environment, don’t worry! We will walk you…

Sometimes you need to know exactly when a process began running on Linux. Maybe the system feels slow. Maybe you’re tracing a bug. Or maybe you just want to confirm when a service started. Here are three quick ways to…

If you’re a programmer, you’ve probably heard of Vi and Vim. But did you know that they’re more than just text editors? In fact, they’re two of the most powerful tools in your programming arsenal. Vi and Vim are both…

This article is part of the following series.   In Linux, you can add a user to a group in several ways. In this post, we’ll show you three different methods for doing so. To add a user to a…

This article is part of the following series.   In this blog post, we will be discussing how to check the current directory in Linux. There are a few different ways to do this, but we will be focusing on…