2-Minute Linux Tips

Learn how to use a host of Linux commands in these 2-minute video tutorials from Sandra Henry-Stocker, author of the Unix as a Second Language blog.

Ep.174

Master Linux Math with the bc Command | Easy CLI Calculations Explained!

Learn how to use the powerful bc command in Linux to perform fast, accurate calculations right from the command line. In this Linux tip, Sandra Henry-Stocker—author of the Unix as a Second Language blog—walks you through examples including addition, exponents, decimals, and setting scale for precision. Whether you're scripting or solving quick math problems, bc is a must-know tool for Linux users. Examples covered: Basic math with bc Using exponents (10^2) Decimal calculations Controlling precision with scale

Ep.174

Jun 23, 2025 1 mins

Operating Systems

Ep.173

Master Linux Math in Seconds: How to Use the expr Command Like a Pro

Want to perform quick math right from your Linux terminal? In this Linux tip, Sandra Henry-Stocker (author of the Unix as a Second Language blog on NetworkWorld) breaks down the expr command—a powerful way to do basic arithmetic like addition, subtraction, multiplication, and division in your command line. You’ll learn how to: Run math operations using expr Save results into variables Understand operator precedence (order of operations) Perfect for beginners and seasoned Linux users alike! 🔔 Subscribe to InfoWorld for more Linux tips: https://www.youtube.com/@InfoWorld 💬 Got questions or topic suggestions? Drop them in the comments below. 👍 Like and share this video to help fellow Linux enthusiasts!

Ep.173

Jun 17, 2025 1 mins

Operating Systems

Ep.172

How to Do Math in the Command Line Using Double Parentheses

In this Linux tip, Sandra Henry-Stocker—author of the Unix as a Second Language blog—shows you how to perform basic math right in the Linux command line using double parentheses syntax $(( )). Learn how to add, multiply, divide, and use multiple numbers in a single expression—all while understanding operator precedence in Bash.

Ep.172

Jun 6, 2025 1 mins

Operating Systems

Ep.171

How to Use the tldr Command in Linux | Quick Alternative to Man Pages

Learn how to use the tldr command in Linux for quick, easy-to-read command examples—no more digging through lengthy man pages! In this Linux tip, Sandra Henry-Stocker, author of the \"Unix as a Second Language\" blog on NetworkWorld, explains how tldr can help you understand common Linux commands like date with simple, practical examples.

Ep.171

May 20, 2025 1 mins

Operating Systems

Ep.170

How to Use the column Command in Linux | Format Output into Neat Columns Easily

In this Linux tip, Sandra Henry-Stocker, author of the \\\"Unix as a Second Language\\\" blog on NetworkWorld, walks you through how to use the column command in Linux to neatly organize your command-line output into formatted columns.

Ep.170

May 8, 2025 1 mins

Operating Systems

Ep.169

How to Use the rev Command in Linux (Reverse Text in Terminal!)

In this quick Linux tip, Sandra Henry-Stocker (author of the “Unix as a Second Language” blog on NetworkWorld) shows you how to use the rev command — a simple but fun tool that reverses text in your terminal.

Ep.169

May 5, 2025 1 mins

Operating Systems

Ep.168

How to use the groupdel comand

In this Linux tip, we look at the groupdel command – the command used to remove a user group on Linux.

Ep.168

Apr 8, 2025 1 mins

Operating Systems

Ep.167

How to use the groupadd command

In this Linux tip, we look at the groupadd command – the command that’s used to set up a new user group on Linux.

Ep.167

Apr 2, 2025 1 mins

Operating Systems

Ep.166

How to use the Sed command

In this Linux tip, we’ll take a look at the sed (stream editor) command and explore some of the command’s common uses. Sed provides an easy way to search for and replace text on the command line.

Ep.166

Mar 28, 2025 2 mins

Operating Systems

Ep.165

How to use the vmstat command

In this video, we’re going to take a look at the vmstat command that reports on virtual memory usage. It vmstat, is a Linux command-line tool that provides stats on memory, paging, block IO, traps, disks and CPU activity.

Ep.165

Feb 25, 2025 1 mins

Operating Systems

Ep.164

How to use the Alias Command

This Linux tip explains the alias command and explains explore why it’s such a time saver – especially when you need to run complex commands.

Ep.164

Feb 25, 2025 2 mins

Operating Systems

Ep.163

How to use exit codes

In this Linux tip, we take a look at exit codes – the numeric codes that are generated when a command is run that indicate whether the command was run successfully or, if not, what kind of problem was encountered.

Ep.163

Feb 21, 2025 2 mins

Operating Systems

Ep.162

How to use the lsblk command

In this Linux tip, we look at lsblk – a command that is helpful for getting information on disk drives and block devices on your Linux system.

Ep.162

Feb 13, 2025 1 mins

Operating Systems

Ep.161

How to use the fdisk command

In this Linux tip, we take a look at the fdisk -l command that provides lots of details on disk partition tables.

Ep.161

Feb 11, 2025 1 mins

Operating Systems

Ep.160

How to use the du command

In this Linux tip, we take a look at the du command that reports on disk space usage.

Ep.160

Feb 9, 2025 1 mins

Operating Systems

Ep.159

How to see file permissions on Linux

In this Linux tip, we look at file permissions on Linux in two ways.

Ep.159

Jan 28, 2025 2 mins

Operating Systems

Ep.158

How to use the Whereis command

In this Linux tip, we take a look at the whereis command. It’s a command that will tell you where the executable and the man page are for a command.

Ep.158

Jan 24, 2025 1 mins

Operating Systems

Ep.157

How to create infinite loops in the Linux command line

In this Linux tip, I show you how to start an infinite loop on the Linux command line. Well, at least it would keep running until something stopped it.

Ep.157

Jan 24, 2025 1 mins

Operating Systems

Ep.156

How to use the dstat command

In this Linux tip, we look at the dstat command – a command that provides a lot of details about system performance such as CPU usage and disk activity.

Ep.156

Jan 17, 2025 2 mins

Operating Systems

Ep.155

How to use the iostat command

In this Linux tip, we take a look at the iostat command – a command that provides stats on IO activity.

Ep.155

Jan 15, 2025 2 mins

Operating Systems

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