At the CGPM , they decided the last leap second we'll ever see for UTC, or Coordinated Universal Time, happened back at the end of 2016 .
Visit jeffgeerling.com → RSS feedOn Hacker News Mar 2016 – Jul 2026
Hardware & Electronics 97Systems & Performance 38Tech Industry & Business 26Life, Learning & Writing 19Networking & Internet 17Infrastructure & DevOps 16
This weekend I wanted to create a new App in Azure so I could help a local nonprofit automate one of their donor relations processes via email through Office 365. So I tried registering an app by visiting the App Registration Portal. I signed in to my personal Microsoft account, clicked 'New registration', then was…
tl;dr: After two weeks of use, I returned my 2016 13" MacBook Pro with Touch Bar and bought one with Function Keys instead. Read on for detailed Battery stress tests, performance tests, and an exploration of how Apple's botched this year's Pro lineup. I've owned almost every generation of Mac desktop and laptop…
I bought a used 2023 Nissan Leaf in 2025, my first 'new' car in 15 years. The above photo was taken by the dealership; apparently their social media team likes to post photos of all purchasers. I test drove a Tesla in 2012, and quickly realized my mistake. No gasoline-powered car (outside of supercars, maybe? Never…
In March, I made my DevOps books free to help anyone who wanted to learn new skills during the global pandemic lockdown. In April, Device42 generously extended that offer for another month. I originally had the idea to give the books away on a whim on a Sunday night, thinking I'd give up a fair chunk of revenue, but…
This is the second year I brought my Dad (a now-retired radio engineer and co-host of Geerling Engineering) to Open Sauce, a Bay Area maker faire-like event, dreamed up by William Osman and featuring hundreds of exhibits ranging from mad science, to vintage electronics, to games, to world-record-breaking Rubik's Cube…
A couple weeks ago, as my kids settled into the car, I asked like I always do, "what songs do you want me to play?" They have a range of favored earworms, from Baby Shark to Babaloo, and usually the songs are tolerable, at least. But a few albums, like Bluey's soundtrack, transcend the children's genre. They're…
I've used Macs as my primary computing devices my entire life. And though I continue to use a Mac for my primary workstation for both work and personal projects, my use of computers has evolved in the past few years quite a bit. With more of my stuff moving into the cloud and fewer software applications being…
Saying yes is easy—at first. It makes you feel better. And it makes you feel like you can do anything! And the person you're saying yes to also gets a happy feeling because you're going to do something for them. Saying no is hard. It's an admission you can't do something. And worse still, you're disappointing someone…
Some broadcast engineering tasks are a bit too daunting for me to consider. Climbing the massive towers that power radio and TV stations is one of them! Your browser does not support the video tag. Recently, local engineer Aaron Cox had the perfect set of conditions for a drone flight to capture some of that risk, as…
Today's video is about Starlink—I've had an active subscription since last February, and as it's been a year, I figured I should post an update. The tl;dr: when I had a new roof put on late last summer, I took down 'Dishy McFlatface', but I haven't put the dish back up. I have been holding out hope I could transfer my…
Every few months, it seems a new post decrying the use of markdown for documentation (or other things) rises to the top of Hacker News. There are often good reasons for preferring a more structured option, like reStructuredText, LaTeX, or Asciidoc. Especially in projects where more formal text is required, or where…
Apple Card is not just the physical card you get in the mail when you sign up for an Apple Card. There are a lot of upsides to what Apple's doing with Apple Card and Apple Pay. I get it. And I also believe the physical titanium Apple Card is a marvel of engineering. Kudos to the metallurgists and designers who…
Since 2008, I've ripped every DVD and Blu-Ray I bought to my Mac, with a collection of SD and HD media totaling around 2 TB today. To make that library accessible, I've always used iTunes and the iTunes Shared Library functionality that—while it still exists today—seems to be on life support, in kind of a "we still…
Earlier this week, as part of my work doing a more complete review of the Raspberry Pi 4 (coming soon!), I decided I'd go all-in and spend one entire day working entirely (or at least as much as possible) from a Raspberry Pi. And not just doing some remote coding sessions or writing a blog post—that's easy to do on a…
I just published the 41st revision of my self-published book Ansible for DevOps, which has sold 87,234 copies as of this writing across LeanPub, Amazon (Kindle and paperback), and iBooks. There are multiples of that number of eBooks downloaded, as I've never DMCA'ed the sites that re-host the book illegally. I just…
Recently this post from @Merocle caught my eye: I'm fixing my iFixit soldering station. I haven't used it for a long time and the battery has gone overdischarge. I hope it will come back to life. Unfortunately, there are no replacements available for sale at the moment. Devices with built-in rechargeable batteries…
tl;dr: My left AirPod had some hardware issue. I got a new one. Now the AirPods work great. The morning Apple's AirPods went up for sale, I was boarding a plane, and had just gotten to my seat on the plane. I knew they'd be in short supply (though I didn't know just how short—my local Apple Store only gets a small…
September 15 update: @YouTubeInsider confirmed that the issue is related to viewers who have adblockers enabled—YouTube's been in an arms race with ad blocking tools, and the fallout is a substantial cut in counted views for creators who have a large audience watching from desktop. Many YouTube content creators…