Stefan Lasiewski's Avatar

Stefan Lasiewski

@stefanlasiewski.bsky.social

Daddy, bicyclist, Kubernetes/Container/Linux system engineer @NERSC & @BerkeleyLab, geek, maker & breaker of things in Berkeley, CA.

499 Followers  |  820 Following  |  180 Posts  |  Joined: 24.09.2023  |  1.7013

Latest posts by stefanlasiewski.bsky.social on Bluesky

I love Linux.

* Data storage: "flushing" typically means syncing in-memory data to permanent storage, like disk
* Data caching: "flushing" usually means clearing the cache
* Lunux Host Firewall (iptables, netfilter), "flushing" means deleting all the rules & exposing your host to the internet

29.10.2025 22:16 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

A preview of some discussions during November conferences:

#KubeCon: I CAN’T BELIEVE PEOPLE STILL USE NFS!
#SC25 #Supercomputing: WOW! NFS is still AWESOME. Vast is THE BOMB! NFS Azure file shares works great!

22.10.2025 23:53 β€” πŸ‘ 5    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Felt earthquake in Berkeley.

16.10.2025 16:25 β€” πŸ‘ 7    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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The sign is gone, but it's one of my historical favorites.

05.10.2025 00:11 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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You'll be pleased to know that Tightwad Hill is just below Berkeley Lab & NERSC.

06.09.2025 22:30 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Thread from @gwensmith.com with photos

06.09.2025 22:11 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Thanks for confirming.

06.09.2025 22:10 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Note that fighter jets usually cannot be seen with Flightradar, but ADSB Exchange tends to show them. I'm not fluent enough in that world to know enough though.

06.09.2025 22:09 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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And at least two of them.

06.09.2025 22:07 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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Probably related to Cal game. Jet was dilly-dallying to the east and then did a pretty straight line near the Cal Stadium

06.09.2025 22:04 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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Some sorta fighter jet flew over Berkeley. I didn't see what direction it went, but I think this might be it? Maybe 3 jets.

globe.adsbexchange.com?icao=~2b0c2f

06.09.2025 21:57 β€” πŸ‘ 8    πŸ” 1    πŸ’¬ 2    πŸ“Œ 0

Some SF BART stations has elevators with windows so you can watch the train depart as your elevator slowly moves up to the station level.

03.09.2025 16:12 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Post image 03.09.2025 00:40 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Every interaction with AI:
---

Me: Hello AI Agent, what is my favorite color?
AI: Your favorite color is green
Me: No actually, my favorite color is blue
AI: Perfect! Please continue with blue. Green grass is lovely.
Me: What? No, I said blue.
AI: YOU ARE CORRECT. Thanks for pointing out my mistake

03.09.2025 00:15 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Just FYI for folks, the transbay tunnel is completely closed and ALL trans bay service has been canceled.

30.08.2025 01:45 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

The whole train just emptied. I decided to ride down to bayfair station instead of San Francisco + ride my bike home.

30.08.2025 01:43 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

San Francisco Bart tunnel is SHUT DOWN. No transbay service at all.

30.08.2025 01:41 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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Berkeley cyclist here- use new Bancroft cycletrack weekly. Wrote to city about westbound light @ Bancroft/Shattuck not detecting bikes. City uses AI system called NoTraffic w/ these cameras & is working on bugs. Will be interesting when it works
πŸš΄β€β™€οΈ I believe these are the cameras.

notraffic.com

28.08.2025 01:27 β€” πŸ‘ 4    πŸ” 1    πŸ’¬ 1    πŸ“Œ 1

Sounds like one of the passengers fled, and there was a second car (a white BMW) that fled away down MLK.

28.08.2025 01:17 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Ironic: As I sat down to write this, I realized that I had pizza in the oven. 20 minutes ago I asked Google Home to set an alarm To check on the pizza. It didn't go off.

Google Home says: "I have no alarms." What are you talking about, crazy human.

5 minute later, the alarm goes off.

28.08.2025 01:14 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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One oddity in the AI experience is the inconsistency in the experience. Gemini on my phone fails ~20% of the time, claiming it can't do something that is clearly within it's scope.

Today, I tried to set an alarm. Two tries, back to back, two different answers.

28.08.2025 01:09 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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Ubuntu users like to make fun of the Blue Screen of Death in Windows. But hey, Ubuntu has it's own White Screen of Death.

I have two identical machines. One Windows 10 & other Ubuntu 24.04. Ubuntu crashes more

Linux on servers: Awesome- I run hundreds of them
Linux on desktop: Not quite as awesome

28.08.2025 00:58 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Missing the old #Berkeley Emergency Twitter. A scanner & some information sharing & we had some good insights.

28.08.2025 00:06 β€” πŸ‘ 6    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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First helicopter left, news helicopter from KTVU showed up.

28.08.2025 00:02 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Sure thing Andi! I do the same thing.

27.08.2025 23:58 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I'm not going to provide a play by play on this event. Just providing a post about "why are there helicopters over Berkeley".

27.08.2025 23:35 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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Helicopters over Berkeley near Ohlone Park (Deleware/Hearst & MLK)

Police chase, medical emergency, several suspects running.

FYI @berkeleyscanner.com

27.08.2025 23:28 β€” πŸ‘ 5    πŸ” 1    πŸ’¬ 5    πŸ“Œ 1

TOML == ye*T* an*O*ther Markup Language

27.08.2025 17:49 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Using OpenSSH for open ssh

27.08.2025 15:52 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I like to say "but my name *is* an encryption key"

27.08.2025 15:51 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

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