All posts under tag "Tutorial"
The fourth part of the PostgreSQL course - let's figure out where PostgreSQL gets parameter values from, how SET differs from ALTER SYSTEM, and why some settings apply instantly while others only apply after restart 🐧.
Part 3 of the PostgreSQL course - we look at how PostgreSQL works internally: processes and memory, prepared statements, cursors, as well as the MVCC mechanism, data snapshots and transaction isolation levels 🐧.
The second part of the PostgreSQL course - today we tackle two main administrator tools: the console `psql` and the graphical DBeaver 🐧.
Starting a new series of PostgreSQL articles for Linux administrators - in the first lesson we set up the server in the official Docker image and configure autostart.
In this article, we will study ways to archive and compress files in Linux systems. I will explain how to use the utilities from the article title.
In this note we will get acquainted with a popular open source configuration management system with the telling name - Ansible🎻.
We continue studying the Linux command line. Today we'll learn how to properly run commands on behalf of another user, including the root user.
A new release of the Linux Mint 22 distribution (based on Ubuntu 24.04) codenamed Wilma has just come out. And just recently the developers prepared instructions and a tool for a native (without reinstalling the OS) system upgrade, from Linux Mint 21.3 version to Linux Mint 22. In this short note I'll demonstrate this simple process ;)
Today we'll learn how to manage file permissions in Linux-based systems. In this note we will cover the following commands: id, chmod, chown.
This is the first post in a series about the console editor Vim. Sooner or later this had to happen) after all, Vim is an incredibly popular editor that often comes "out of the box" in most Linux distributions.
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