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When working with Git, you might encounter a situation where you need to edit a commit message. There are number of reasons why you would want to make the change, such as fixing a typo, removing sensitive information, or adding additional information.

In Bash, everything after the hash mark (#) and until the end of the line is considered to be a comment.

Java is one of the most popular programming languages used to build different types of applications and systems. In this tutorial, we will explain how to install one or more Java (OpenJDK) versions on CentOS 8 and how to set the default Java via alternatives.

When it comes to Git hosting you have a number of options available. GitHub, Gitlab and Bitbucket are popular solutions, but running your own Git server is an alternative worth considering. In this guide, we explain how to set up a bare Git server on Linux.

MySQL replication is a process of copying data from one database server (master) to one or more servers (slaves). MySQL supports several replication topologies with Master/Slave topology being one of the most well-known topologies in which one database server acts as the master, while one or more servers act as slaves. By default, the replication is asynchronous where the master sends events that describe database modifications to its binary log and slaves request the events when they are ready.

exFAT is a proprietary Microsoft file system optimized for flash memory devices such as SD cards and USB flash drives. In this tutorial, we’ll show you how to enable exFAT support on Debian Linux.

If you are developer or system administrator chances are that you're dealing with Nginx on a regular basis. One of the most common tasks you'll likely perform is redirecting the HTTP traffic to the secured (HTTPS) version of your website.

Before you can use an SD card or USB drive, it needs to be formatted and partitioned. Typically most USB drives and SD cards come preformatted using the FAT file system and do not need to be formatted out of the box. However, in some cases, you may need to format the drive.

Bzip2 is one of the most popular algorithms for compressing tar files. In this tutorial, we will explain how to extract (or unzip) tar.bz2 and tbz2 archives using the tar command.

In this guide, we will explain how to create an SSH tunnel and connect to the MySQL server from remote clients.

paste is a command that allows you to merge lines of files horizontally. It outputs lines consisting of the sequentially corresponding lines of each file specified as an argument, separated by tabs. In this tutorial, we will explain how to use the paste command.

pushd and popd are commands that allow you to work with directory stack and change the current working directory in Linux and other Unix-like operating systems. Although pushd and popd are very powerful and useful commands, they are underrated and rarely used.

Go is a modern open-source programming language created by Google, used to build reliable, simple, fast, and efficient software. Many popular applications, such as Kubernetes, Docker, Terraform, and Rancher, are written in Go.

Minecraft is one of the most popular games of all time. It is a sandbox video game, which allows its players to explore infinite worlds and build everything from simple houses to massive skyscrapers. In this tutorial, we will walk you through the process of installing and configuring Minecraft Server on Raspberry Pi 3 or 4.

whereis is a command-line utility that allows you to find the location of the binary, source, and manual page files for a given command.

The su (short for substitute or switch user) utility allows you to run commands with the privileges of another user, by default the root user. Using su is the simplest way to switch to the administrative account in the current login session. This is especially handy when the root user is not allowed to log in to the system through ssh or using the GUI display manager. In this tutorial, we will explain how to use the su command.

In Linux, access to the files is managed through the file permissions, attributes, and ownership. This ensures that only authorized users and processes can access files and directories. This tutorial covers how to use the `chmod` command to change the access permissions of files and directories.

Webmin is an open-source web control panel for administering Linux servers. It allows you to manage the system users, groups, disk quotas as well as install and configure web, ssh, ftp, email and database servers. With Webmin, you can configure almost every aspect of the system. In this tutorial, we'll show you how to install Webmin on Debian 10, Buster.

Gunzip is a command-line tool for decompressing Gzip files. Gzip is one of the most popular compression algorithms that reduce the size of a file and keep the original file mode, ownership, and timestamp. By convention, files compressed with Gzip are given either the .gz or .z extension. In this tutorial, we will explain how to use the gunzip command.

This tutorial explains how to truncate files to zero size in Linux systems using shell redirection and the truncate command.