This article explores the differences and common uses for the Raspberry Pi and Arduino hardware platforms. You’ll see a lot of talk about “Arduino vs. Raspberry Pi” as if they’re competing products – but they’re not! Arduinos and Raspberry Pis may both have started as small, affordable teaching platforms, but their… Read More »Arduino vs Raspberry Pi: What are they and which one should I use?
In this tutorial, we explain how to use the cp command in Linux to copy files or directories. Examples are included below. Linux is one of the most popular Operating Systems on the planet and is the basis for all Android devices. It is open-source… Read More »Linux cp Command: How to Copy Files and Directories
In this guide, we explain how to save a file and quit/exit in Vim, how to save a file without exiting, and how to quit/exit without saving. Vim (Vi IMproved) is an open-source text editor for Unix or Linux. It’s used to write and edit… Read More »How to Save a File and Quit in Vim/Vi
In the Filesystem Hierarchy Standard used by Linux operating systems, all files and directories appear under the root directory “/” but access to it is often restricted for security reasons. In Linux distributions like Debian, you can gain full access from the SSH by using… Read More »Debian: How to Add a User to Sudoers
Linux is the world’s most widely used open-source operating system (OS). Because Linux is open-source, it means that the code is free and available to the public to view/use. Android, one of the most popular platforms on the planet, is powered by Linux. As such,… Read More »How Change the Timezone in Linux
In Linux and Unix systems, tr is a command-line utility that translates, erases, and “squeezes” repeated characters – in fact, tr stands for “translate.” This guide explains how to use the tr command in Linux, with examples. It can be used for operations such as… Read More »Linux tr Command with Examples
This guide explains how to use the grep utility for searching multiple words, strings, and patterns. You can find full examples of the commands used to accomplish this below. What Is Grep? When we refer to grep, we’re talking about the command-line function. Grep stands… Read More »How to Grep for Multiple Words, Strings and Patterns
Within your computer, the central processing unit, aka the CPU, is a critical component. Despite its essential nature in performing countless data processing functions, many of us likely know very little about the CPU, hidden away inside the computer out of sight as it works… Read More »How to Get CPU Information on Linux
Like most modern operating systems, Linux is designed to be a secure multi-user system. Each system, therefore, needs a system administrator with the ability to manage user accounts. That means creating accounts, assigning privileges to them, and deleting them when they are no longer required.… Read More »How to Use the userdel Command to Remove Users in Linux
There are several ways to append text or new lines to a file using the Bash command line. The majority of them use the double >> to redirect output from another command (such as “echo” or “printf“) into the designated file. An alternative method, using… Read More »How to Append to File in Bash