Brian Kernighan: Inside Bell Labs, The Best Programmer, Why C Won

Brian Kernighan is a former Bell Labs member of technical staff, co-author of the original C book, and the one who popularized “Hello World.” We talked about what Bell Labs was like and the stories behind all the famous tools that were built there.

• My ergonomic keyboard project I mentioned, you can follow along here: https://read.compose.llc/
• The Kickstarter page for it: https://www.kickstarter.com/projects/ryanlpeterman/compose-simple-ergonomics-beautifully-done

Podcast links:

• YouTube: https://www.youtube.com/watch?v=sMllOlxVgD0
• Apple: https://podcasts.apple.com/us/podcast/the-peterman-pod/id1777363835
• Transcript: https://www.developing.dev/p/e072-brian-kernighan

Thank you to this episode's sponsor for supporting my work:

• WorkOS: makes your app Enterprise Ready with easy to use APIs to add SSO, SCIM, RBAC, and more in just a few lines of code, check them out at https://workos.com/

Timestamps:

(00:00) Intro
(00:42) What Bell Labs was and how he got hired
(06:34) Why so many inventions came from Bell Labs
(14:15) A day in the life at Bell Labs
(27:55) The most impressive people he worked with
(33:50) The AT&T film explaining Unix
(39:46) Why C was so influential
(43:25) How awk was created
(48:40) What he misses most about Bell Labs
(54:10) Are LLMs bad for computer science education
(01:01:46) His 1972 commit in the Go repo
(01:03:43) Grace Emlen, the fake Bell Labs employee
(01:07:39) Why he writes so many books
(01:19:58) His favorite and least favorite languages
(01:24:28) Advice for students and young people
(01:27:42) Outro

Where to find Brian:

• Personal website: https://www.cs.princeton.edu/~bwk/
• Princeton University faculty profile: https://www.cs.princeton.edu/people/profile/bwk
• Wikipedia: https://en.wikipedia.org/wiki/Brian_Kernighan

Where to find Ryan:

• Newsletter: https://www.developing.dev/
• X/Twitter: https://x.com/ryanlpeterman
• LinkedIn: https://www.linkedin.com/in/ryanlpeterman/
• Threads: https://www.threads.com/@ryanlpeterman
• Instagram: https://www.instagram.com/ryanlpeterman
• TikTok: https://www.tiktok.com/@ryanlpeterman

Referenced in this episode:

• UNIX: Making Computers Easier to Use: https://www.youtube.com/watch?v=XvDZLjaCJuw
• Brian Kernighan’s first Harvard CS50 lecture (1996): https://www.youtube.com/watch?v=6Ba1XFVy7qw
• A Beautiful Mind: https://www.universalpicturesathome.com/movies/a-beautiful-mind
• Shifts: Important Ideas in Computing: https://www.amazon.com/Shifts-Nine-Ideas-Revolutionized-Computing/dp/0262064294/
• Labscam (Penn & Teller at Bell Labs, 1989): https://www.nokia.com/bell-labs/about/dennis-m-ritchie/labscam.html
• Labscam video: https://www.youtube.com/watch?v=qnsmDNamd2g
• Understanding the Digital World (new edition): https://www.amazon.com/Understanding-Digital-World-Computers-Internet/dp/0691288879