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Keeping your CentOS system up to date with the latest security updates is one of the most important parts of overall system security. If you don’t update your operating system’s packages with the latest security patches, your machine will be vulnerable to attacks. In this tutorial, we will show you how to manually update system packages on CentOS 7. The same instructions apply for CentOS 6.

Docker is a containerization platform that allows you to quickly build, test and deploy applications as portable, self-sufficient containers that can virtually run everywhere.

When you type a command, the shell searches through all directories specified in the user $PATH variable for an executable file of that name.

Xrdp is an open-source implementation of the Microsoft Remote Desktop Protocol (RDP) allowing you to graphically control a remote system. With RDP you can log in to the remote machine and create a real desktop session same as if you had logged in to a local machine.

Apache HTTP server is one of the most popular web servers in the world. It is an open-source and cross-platform HTTP server that powers a large percentage of the Internet’s websites. Apache provides many powerful features that can be extended through additional modules. In this tutorial, we’ll explain how to install Apache on Debian 10, Buster.

MySQL, the world’s most popular open source relational database management system is not available in the default Debian’s repositories. MariaDB is the default database system in Debian 10. This tutorial, explains how to install and secure MySQL on Debian 10 from the MySQL Apt Repository.

One of the most common operations when working on Linux is to search for files and directories. On Linux systems, there are several commands which allow you to search for files with find and locate being the most used ones. The locate command is the quickest and simplest way to search for files and directories by their names. In this tutorial, we will explain how to use the locate command.

MySQL (and its drop-in replacement MariaDB) is the most popular open-source relational database management system. There are some important differences between MySQL versions, so knowing which version is running on your server might be important in some situations. For example, if you are installing an application that requires a specific MySQL version before starting with the installation you’ll need to find out the version of your MySQL server. In this article, we’ll show you how to check the version of the MySQL or MariaDB server that is installed on your system.

If you are learning Bash scripting by reading other people’s code you might have noticed that the first line in the scripts starts with the #! characters and the path to the Bash interpreter. This sequence of characters (#!) is called shebang and is used to tell the operating system which interpreter to use to parse the rest of the file.

Branches are part of the software development process and one of the most powerful features in Git. Branches are essentially pointers to a certain commit. When fixing a bug or working on a new feature, developers are creating a new branch which later can be merged into the main codebase.

One of the common operation when working with strings is to split a string to an array of substrings using a given delimiter.

VirtualBox provides a set of drivers and applications (VirtualBox Guest Additions) which can be installed in the guest operating system. The Guest Additions offer several useful functionalities for guest machines such as shared folders, shared clipboard, mouse pointer integration, better video support and more. In this tutorial, we will show you how to install VirtualBox Guest Additions on Ubuntu 18.04 guests. The same instructions apply for Ubuntu 16.04 and any Ubuntu-based distribution, including Linux Mint and Elementary OS.

One of the most common operations when working with strings in Bash is to determine whether or not a string contains another string.

Swap is a space on a disk that is used when the amount of physical memory is full. When a Linux system runs out of RAM, inactive pages are moved from the RAM to the swap space.

Nginx is an open-source, high-performance HTTP and reverse proxy server that powers some of the largest sites on the Internet. Compared to Apache, Nginx can handle a much large number of concurrent connections and has a smaller memory footprint per connection. In this tutorial, we'll explain how to install and manage Nginx on Debian 10 Buster.

In this tutorial, we will explain how to install Java (OpenJDK) on Debian 10 Linux.

The hostname is set at the time when the Debian operating system is installed or if you are spinning up a virtual machine it is dynamically assigned to the instance at startup. This tutorial explains how to change the hostname on Debian 10 Buster without restarting the system.

Squid is a full-featured caching proxy supporting popular network protocols like HTTP, HTTPS, FTP, and more. Placing Squid in front of a web server can greatly improve the server performance by caching repeated requests, filtering web traffic and accessing geo-restricted content.

This tutorial, explains how to create a bootable Debian 10 (Buster) USB stick from the Linux terminal using the dd command. The USB stick can be used to boot and install Debian on any computer that supports booting from USB.

MariaDB is an open source, multi-threaded relational database management system, backward compatible replacement for MySQL. MariaDB is the default implementation of MySQL in Debian.