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28.05.2025
How to Set a Static IP Address in Ubuntu 22.04

Sometimes, a device on your network needs a permanent IP address — like when you’re setting up a server, a VPN, or a storage system. In this guide, we’ll walk you through how to assign a static IP in Ubuntu 22.04 using Netplan.

28.05.2025
How to Find a Process Name by Its PID in Linux

Sometimes you need to quickly figure out which process is running under a specific PID. In this guide, we’ll show you how to do that — but first, let’s briefly go over how processes work in Linux. Whenever you or the system launches a program, the

27.05.2025
Understanding the Difference Between shutdown, poweroff, halt, and reboot in Linux

In this article, we’ll break down how the shutdown, poweroff, halt, and reboot commands differ in Linux. We’ll look at what each command actually does and what options they offer. If you’re just getting started with Linux server administration, it’s

13.05.2025
Mail Server Exim4 on Linux — A Clear Guide for Those Who Value Control Over Their Server

When you decide to set up your own mail server, the first thing that comes to mind is reliability. You need a tool that can handle the email traffic, won’t crash at the worst possible moment, and won’t trap you in endless complicated configurations.

29.01.2025
Guide: How to Add a New User in Linux

The Linux operating system is known for its security and flexibility, allowing users to configure the system to their needs. One of the useful features of Linux, as well as other Unix-like systems, is the support for multiple users.

06.01.2025
Overview of Deprecated Console Commands in Linux with Modern and Secure Alternatives

Using outdated commands is not uncommon among Linux users. For instance, you might have learned about a utility many years ago from a tutorial or manual and continued using it out of habit, even though a more modern and convenient alternative

06.12.2024
How to Use the Netcat Command — the "Swiss Army Knife" for Working with Networks in the Terminal

Netcat is a console command used for diagnostics, debugging, creating, and listening to network connections. Here's a brief and clear guide on how to use this utility.

04.11.2024
Using RSYNC utility on VPS

rsync is a powerful file synchronization and transfer utility that is often used on servers, including virtual private servers (VPS). It allows you to efficiently copy and synchronize files and directories between local and remote systems.

29.08.2024
What the NC command is for in Linux

The netcat command is necessary for sending and receiving data using TCP and UDP protocols. It does not have a large set of functions, but it is sufficient for checking the connection and simple debugging. How to communicate through the TCP

29.08.2024
Cowthink program on Linux

Cowthink does the same thing as Cowsay, but outputs a drawing of a cow and its message in the field of thinking, not in speech. That is, the drawing of the cow will be inside the cloud of thoughts, as if saying that the cow is thinking or thinking