How to Upgrade Debian 9 Stretch to Debian 10 Buster
After more than two years of development, the new Debian stable version, Debian 10 codenamed Buster, was released on July 6, 2019. In this tutorial, we...
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How to List Groups in Linux
In Linux, a group is a collection of users. This tutorial explains how to show all groups a user is a member of. We will also...
Read moreHow to Install OpenCV on Raspberry Pi 3
OpenCV (Open Source Computer Vision Library) is an open-source computer vision library and has bindings for C++, Python and Java. In this tutorial, we will explain...
Read moreUmask Command in Linux
The umask utility allows you to view or to set the file mode creation mask, which determines the permissions bits for newly created files or directories.
Read moreLess Command in Linux
Less is a command line utility that displays the contents of a file or a command output, one page at a time. It is similar to...
Read moreHow to Install VLC Media Player on Debian 9
VLC is a free and open-source multimedia player. It is cross-platform and can play almost all multimedia files as well as DVDs, Audio CDs, and different...
Read moreHow to List PostgreSQL Databases and Tables using psql
This tutorial explains how to show databases and tables in a PostgreSQL server using psql.
Read moreHow to Use Nano, the Linux Command Line Text Editor
This guide explains the basic usage of the nano editor, including how to create and open a file, edit a file, save a file, search and...
Read moreHow to List and Delete UFW Firewall Rules
UFW stands for Uncomplicated Firewall, and is a user-friendly frontend for managing iptables (netfilter) firewall rules. In this tutorial, we will cover how to list and...
Read moreHow to Run Sudo Command Without Password
The sudo command allows trusted users to run programs as another user, by default the root user. This tutorial explains how to configure the sudoers file...
Read moreHow to Install and Configure Squid Proxy on Ubuntu 18.04
Squid is a full-featured caching proxy supporting popular network protocols like HTTP, HTTPS, FTP, and more. This tutorial will walk you through the process of setting...
Read moreHow to Install and Use Docker on Raspberry Pi
In this tutorial, we will explain how to install Docker on Raspberry Pi and explore the basic Docker concepts and commands.
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