Stories about the people transforming technology from the command line up.
Floppies: The Disks that Changed the World
The floppy disk was one of the greatest breakthroughs in computing. It helped spin up the software industry with a format that endured for decades. And in some cases, it’s conserved treasures once thought to be lost forever. Before floppy disks came along, computing was weighed down by punch cards and magnetic tapes. Steven Vaughan-Nichols describes the magnitude of the changes brought by the floppy disk. Dave Bennet explains how the need for permanent storage, which was also easily mailable, led to the first 8-inch drives. George Sollman recalls how he was tasked with creating a smaller floppy, and what unexpected sources inspired the next design. And when Sollman showed it to the Homebrew Computer Club, a couple of this season’s usual suspects asked him to see more. And the rest is history. Or is it? Matthew G. Kirschenbaum points out that floppy disks are still in use in some unexpected places. And Jason Scott and Tony Diaz tell us how they brought some source code from the sneakernet to the cloud. If you want to read up on some of our research on floppy disks, you can check out all our bonus material over at redhat.com/commandlineheroes. You’ll find extra content for every episode. Follow along with the episode transcript.
Personal Computers: The Altair 8800 and the Dawn of a Revolution
The Altair 8800 is why we have computers in most homes today. It was initially designed for hobbyists. But a few visionaries saw massive potential in this strange little machine—and worked hard to make others see it too. What they created led to so much more than anyone could have ever imagined. Forrest Mims tells us how his co-founder, Ed Roberts, planned to save their struggling electronics company. His idea? A microcomputer made for hobbyists. That computer led to a fateful phone call from Bill Gates and Paul Allen. Dan Sokol and Lee Felsenstein recall the unveiling of the Altair 8800 at the Homebrew Computer Club, and how it sparked Steve Wozniak’s eureka moment for the Apple I. We then hear from John Markoff about an infamous software heist that set the stage for the debate about whether code should be proprietary. And finally, Limor Fried reflects on how this story continues to influence today’s open source hardware movement. If you want to read up on some of our research on personal computers, you can check out all our bonus material over at redhat.com/commandlineheroes. You’ll find extra content for every episode. Follow along with the episode transcript .
Mainframes: The GE 225 and the Birth of BASIC
The computing industry started booming after World War II. General Electric’s CEO refused to enter that market. But a small team of rebel employees bent the rules to forge on in secret. They created the GE 225. It was a giant leap in engineering that pushed computing from a niche market to the mainstream—sowing the seeds for today’s tech industry. Before the creation of general-purpose mainframes, computers were often built to perform a single function. William Ocasio recalls how GE’s first specialized computers, the ERMA, helped banks process thousands of transactions per day. John Joseph recounts how a few key GE employees hoodwinked their CEO into creating a computing department. Tomas Kellner explains how their work resulted in a revolutionary machine—the GE 225. And Joy Lisi Rankin describes how engineers at Dartmouth College adapted the GE 225 for time-sharing and used it to create BASIC—major milestones in making computing more accessible. If you want to read up on some of our research on mainframes, you can check out all our bonus material over at redhat.com/commandlineheroes . You’ll find extra content for every episode. Follow along with the episode transcript.
Minicomputers: The Soul of an Old Machine
They don’t fit in your pocket. But in their day, minicomputers were an order of magnitude smaller than the room-sized mainframes that preceded them. And they paved the way for the personal computers that could fit in a bag and, eventually, the phones in your pocket.16-bit minicomputers changed the world of IT in the 1970s. They gave companies the opportunity for each engineer to have their own machines. But it wasn’t quite enough, not until the arrival of 32-bit versions.Carl Alsing and Jim Guyer recount their work at Data General to create a revolutionary new 32-bit machine. But their now legendary work was done in secret. Codenamed “Eagle,” their machine was designed to compete with one being built by another team in their own company. These engineers recall the corporate politics and intrigue required to keep the project going—and how they turned restrictions into advantages. Neal Firth discusses life on an exciting-but-demanding project. One where the heroes worked together because they wanted to, without expectations of awards or fame. And all three discuss how this story was immortalized in the non-fiction engineering classic, The Soul of a New Machine by Tracy Kidder. If you want to read up on some of our research on minicomputers, you can check out all our bonus material over at redhat.com/commandlineheroes. You’ll find extra content for every episode. Follow along with the episode transcript.
Introducing Season 4 of Command Line Heroes
No one ever said hardware was easy. In Season 4, Command Line Heroes is telling 7 special stories about people and teams who dared to change the rules of hardware and in the process changed how we all interact with technology. The first episode drops January 28, 2020. Subscribe today and sign up for the newsletter to get the latest updates and bonus content.
The C Change
C and UNIX are at the root of modern computing. Many of the languages we’ve covered this season are related to or at least influenced by C. But C and UNIX only happened because a few developers at Bell Labs created both as a skunkworks project. Bell Labs was a mid-twentieth century center for innovation. Jon Gertner describes it as an “idea factory.” One of their biggest projects in the 1960s was helping build a time-sharing operating system called Multics. Dr. Joy Lisi Rankin explains the hype around time-sharing at the time—it was described as potentially making computing accessible as a public utility. Large teams devoted years of effort to build Multics—and it wasn’t what they had hoped for. Bell Labs officially moved away from time-sharing in 1969. But as Andrew Tanenbaum recounts, a small team of heroes pushed on anyways. C and UNIX were the result. Little did they know how much their work would shape the course of technology.That's all for Season 3. If you want to dive deeper into C and UNIX, you can check out all our bonus material over at redhat.com/commandlineheroes. You’ll find extra content for every episode. Follow along with the episode transcript. Subscribe to the newsletter for more stories and to be among the first to see announcements about the podcast. See you soon for Season 4.
Talking to Machines: LISP and the Origins of A.I.
Creating a machine that thinks may have seemed like science fiction in the 1950s. But John McCarthy decided to make it a reality. And he started with a language he called LISP. Colin Garvey describes how McCarthy created the first language for AI. Sam Williams covers how early interest in thinking machines spread from academia to the business world, and how—after certain projects didn’t deliver on their promises—a long AI winter eventually set in. Ulrich Drepper explains that the dreams of AI went beyond what the hardware could deliver at the time.But hardware gets more powerful each and every day. Chris Nicholson points out that today’s machines have enough processing power to handle the resource requirements of AI—so much so that we’re in the middle of a revolutionary resurgence in AI research and development. Finally, Rachel Thomas identifies the languages of AI beyond LISP—evidence of the different kinds of tasks AI is now being prepared to do.If you want to dive deeper into LISP and the origins of artificial intelligence, you can check out all our bonus material over at redhat.com/commandlineheroes. You’ll find extra content for every episode.Follow along with the episode transcript.
Heroes in a Bash Shell
Shells make large-scale IT possible. They’re a necessary component to modern computing. But it might not have turned out that way without a lot of hard work from a developer at the Free Software Foundation named Brian Fox. Now, the Bash shell is shipped with almost every computer in the world. In the ‘70s, Bell Labs wanted to automate sequences of repetitive, complex commands. Chet Ramey describes how Bell developed several shells—but there could be only one officially supported shell for UNIX. Enter the Bourne shell. Though it was the best of that crop, the Bourne shell had its limits. And it was only available with a limited UNIX license. Brian J. Fox recounts his time at the Free Software Foundation where he needed to create a free—as in speech—version of the Bourne shell. It had to be compatible without using any elements of the original source code. That Bourne-Again Shell, aka Bash, is possibly the most widely used software in the planet. And Taz Brown describes how it’s one of the most important tools a developer can learn to use. You can dive deeper into the story of Bash, or any of the programming languages we cover this season, if you head over to the show’s site at redhat.com/commandlineheroes Follow along with the episode transcript.
The Infrastructure Effect: COBOL and Go
Languages used for IT infrastructure don’t have expiration dates. COBOL’s been around for 60 years—and isn’t going anywhere anytime soon. We maintain billions of lines of classic code for mainframes. But we’re also building new infrastructures for the cloud in languages like Go. COBOL was a giant leap for computers to make industries more efficient. Chris Short describes how learning COBOL was seen as a safe long-term bet. Sixty years later, there are billions of lines of COBOL code that can’t easily be replaced—and few specialists who know the language. Ritika Trikha explains that something must change: Either more people must learn COBOL, or the industries that rely on it have to update their codebase. Both choices are difficult. But the future isn’t being written in COBOL. Today’s IT infrastructure is built in the cloud—and a lot of it is written in Go. Carmen Hernández Andoh shares how Go’s designers wanted a language more suited for the cloud. And Kelsey Hightower points out that languages are typically hyper-focused for one task. But they’re increasingly open and flexible. You can learn more about COBOL or Go, or any of the languages we’re covering this season, by heading over to redhat.com/CommandLineHeroes. We're passing along a correction that Carmen Hernández Andoh shared on Twitter: she misspoke about Rob Pike inventing ASCII. Bob Bremer is considered the main creator of ASCII. Follow along with the episode transcript
Diving for Perl
Languages come and go. A few have the right stuff to rise to the top—and fewer stay there. Perl had a spectacular rise, a quiet slump, and has now found its place in the world of programming. Perl seemed destined to rule the web. Michael Stevenson and Mike Bursell describe how Perl’s design made it ideal for the early web. We hear from Conor Myhrvold about its motto: “There is more than one way to do it.” Elizabeth Mattijsen shares how—despite Perl’s strength—a long development cycle slowed Perl’s growth. And although it’s not the top web language anymore, John Siracusa points out that Perl lives on as a niche tool. If you want to dive deeper into the story of Perl, head on over to redhat.com/commandlineheroes. Guest John Siracusa also co-hosts three podcasts. Check out Accidental Tech Podcast, Reconcilable Differences, and Robot or Not?
Creating JavaScript
A mission to set the course of the world wide web in its early days. 10 days to get it done. The result? An indispensable language that changed everything. JavaScript was the underdog that won against all odds. Clive Thompson recounts the browser wars and how much the fallout influenced the future of the internet. Charles Severance explains how JavaScript went from a last-minute moonshot to the default web development language. Michael Clayton confesses he, like many others, underestimated JavaScript. And Klint Finley describes a gloomy internet without it. If you want to dive deeper into the story of JavaScript, head on over to redhat.com/commandlineheroes We first mentioned JavaScript's story in Episode 2 of Season 2—and made a slight correction to the story in this episode. To learn even more about those 10 days, check out the DevChat podcast interview with Brendan.
Learning the BASICs
Becoming a programmer used to require a Ph.D. and having access to some serious hardware. Then, in 1965, a couple of engineers had a radical idea: make it easier for people to get started. Beginner languages, like BASIC, burst the doors to coding wide open. Tom Cormen and Denise Dumas recall how BASIC changed everything. Avi Flombaum and Saron share tips on picking a first language in this new era of software development. And we hear from Femi Owolade-Coombes and Robyn Bergeron about how the next generation of coders are getting their start with video games. Beginner languages give everyone an opportunity to get their foot in the door. And that helps the industry as a whole. Check out redhat.com/commandlineheroes for more information on beginner languages. Find out more about why BASIC is a beloved first language and how the next generation will learn to code on Opensource.com.
Python’s Tale
A benevolent dictator for life steps down and changes the course of the Python language forever. Guido van Rossum’s “Transfer of Power” memo brings attention to the way programming languages evolve. In this episode, Emily Morehouse makes the connection between Python’s technical extensibility and its inclusive community. Michael Kennedy explains how Python is both easy to learn and powerful enough to build YouTube and Instagram. And Diane Mueller highlights how the Python community took the lead on so many inclusive practices that are spreading in tech—including the rise of community-led decision-making. Sometimes, a benevolent dictator can get a language started. But Python shows it’s communities that make languages thrive. Learn more about Python at redhat.com/commandlineheroes Also check out these Python podcasts that guest Michael Kennedy is part of — Talk Python to Me, and Python Bytes We hear from Guido van Rossum in this episode from a Computer History Museum interview.
Introducing Season 3 of Command Line Heroes
Command Line Heroes is back for Season 3. We’re exploring the epic history of programming languages and how communities affect their development. We're talking Python, learning about JavaScript, and diving into Perl. And that’s just our “Hello, World” for Season 3. The first episode drops June 25. Subscribe today and sign up for the newsletter. Head over to redhat.com/commandlineheroes to catch up on seasons 1 and 2. Check out all the additional content while you're there.
Open Curiosity: NASA, Mars, and Beyond
The best and brightest took us to the moon with the computing power of pocket calculators. Now they’re taking us farther—and they’re doing it with the tech we’ve been talking about all season. Open source is taking us to Mars. The Season 2 finale takes us to NASA’s Jet Propulsion Laboratory (JPL). Tom Soderstrom shares how much JPL has gained by embracing open source. Hila Lifshitz-Assaf explains that NASA is solving some of their greatest problems with open software and crowdsourcing. And Dan Wachspress describes how working with NASA means proprietary companies need to make some sacrifices—but they get to work on the most innovative projects in the world. The explorers of the final frontier are choosing to work in the open—and Mars is their destination. What’s next? And while this may mark the end of Season 2, it's not really goodbye because we still want to hear from you. Reach out to us at redhat.com/commandlineheroes—we'd love to hear what you thought of this season.