HOWTOs

Natalie Rusk's Scratch Coding Cards (No Starch Press)

The phrase "Learn to Program One Card at a Time" plays the role of subtitle and friendly invitation from Scratch Coding Cards, a colorful collection of activities that introduce children to creative coding. more>>

Own Your DNS Data

I honestly think most people simply are unaware of how much personal data they leak on a daily basis as they use their computers. Even if they have some inkling along those lines, I still imagine many think of the data they leak only in terms of individual facts, such as their name or where they ate lunch. more>>

Simple Server Hardening

These days, it's more important than ever to tighten up the security on your servers, yet if you were to look at several official hardening guides, they read as though they were written for Red Hat from 2005. That's because they were written for Red Hat in 2005 and updated here and there through the years. more>>

Bash Shell Script: Building a Better March Madness Bracket

Last year, I wrote an article for Linux Journal titled "Building Your March Madness Bracket" My article was timely, arriving just in time for the "March Madness" college basketball series. more>>

The Weather Outside Is Frightful (Or Is It?)

Blistery cold weather is sinking in, which ought to ignite an instinctual desire to get your house in order and monitor it so the water pipes don't freeze and burst. So, let's take a timely look at a project setting up some temperature probes in various areas, reading them and reporting in a custom dashboard. more>>

Understanding Firewalld in Multi-Zone Configurations

Stories of compromised servers and data theft fill today's news. It isn't difficult for someone who has read an informative blog post to access a system via a misconfigured service, take advantage of a recently exposed vulnerability or gain control using a stolen password. more>>

Let's Go to Mars with Martian Lander

This is the beginning of a series of articles where I develop a variation on the classic lunar-lander game themed around the planet Mars. To do this in three dimensions can be rather complicated, so in the spirit of the original arcade game (that I became rather obsessed with, I should admit), I'm going to tackle the simplified two-dimensional problem. more>>

My Childhood in a Cigar Box

I grew up in the 1980s. That meant we drank far too much Kool-Aid, and on Saturday mornings, we got up early to watch cartoons. It also was the heyday of arcades, but I lived in the ghetto of Detroit and couldn't afford quarters to play games. Plus, there were none anywhere near the neighborhood where I lived. For me, the first real video-game experience was the Atari 2600. more>>

Smith Charts for All

I've covered several different programs that are useful when doing electrical engineering in the past. In this article, I want to look at a program called linsmith that helps you do calculations or see how different parameters behave. more>>

The Tiny Internet Project, Part III

In a previous article, I introduced the Tiny Internet Project, a self-contained Linux project that shows you how to build key pieces of the internet on a single computer using virtualization software, a router and free open-source applications. more>>

Secure Desktops with Qubes: Extra Protection

This article is the fourth in my series about the Qubes operating system, a security-focused Linux distribution that compartmentalizes your common desktop tasks into individual VMs. more>>

Finishing Up the Content Spinner

You'll recall that in my last article I shared a long, complex explanation for why spam email catches my attention and intrigues me, perhaps more than it should. Part of it is that I've been involved in email forever—I even wrote one of the most popular old-school email programs back in the day. more>>

Transitioning to Python 3

The Python language, which is not new but continues to gain momentum and users as if it were, has changed remarkably little since it first was released. I don't mean to say that Python hasn't changed; it has grown, gaining functionality and speed, and it's now a hot language in a variety of domains, from data science to test automation to education. more>>

Stepping into Science

In past articles, I've looked at several libraries or specialist applications that can be used to model some physical process or another. Sometimes though you want to be able to model several different processes at the same time and in an interactive mode. more>>

A Better Raspberry Pi Streaming Solution

In the June 2016 issue, I described my Raspberry Pi outdoor camera build. Since then, however, I've discovered a different way to stream video from it. more>>

Syndicate content