efutch.bsky.social

Cloud & Infrastructure team lead;Speaker TEDx,BSides,ISACA,Interop; Prof Compilers, Operating Systems. Science fiction,rock 🎶;opinions are my own

[Washingtons ghost @washghost1]

I’d go check it out just based on the sign

[BrunoGuedes1983 @BGuedes1983]

O Japonês Kubo é o primeiro jogador com nome de uma forma geométrica a disputar 3 mundiais.
Superou Redondo e Cuadrado, ambos apenas com duas participações.

[THE OBJECTIVE @TheObjective_es]

Cabo Verde, el país que recurrió a LinkedIn para jugar el Mundial.

https://t.co/XW59f8Qrve

[Kashaf @noor36758]

the weekend really humbled him 💀

[vx-underground @vxunderground]

Literally the worst cable management I've ever seen in my life

[trish @TrisH0x2A]

a professor at Illinois got frustrated with existing systems programming textbooks

so he started a wikibook project and had students help write it

it covers C, processes, threads, synchronization, memory allocation, networking, filesystems, scheduling and security

[OS Dev @OSdev_]

Randell & Kuehner's Dynamic Storage Allocation Systems (1968) is one of the earliest papers that studies how operating systems allocate and reclaim memory at runtime.

Instead of proposing a new allocator, it surveys existing allocation techniques and classifies them based on their design and trade-offs. The paper discusses fixed-size and variable-size allocation schemes, relocation, protection, and different placement algorithms such as first fit and best fit.

A major focus is memory fragmentation, especially external fragmentation, and how it affects long-running systems. It highlights the limitations of contiguous allocation and provides a framework for evaluating dynamic storage management techniques that later influenced modern memory management designs.

*This motivated the innovation of Paging*

[Blair McNally 🏴󠁧󠁢󠁳󠁣󠁴󠁿 @BlairMcNally1]

THAT WAS THE BEST FOOD IVE EVER HAD IN MY LIFE OMG 😭😭😭

VAMOSSS CHICHARRONNN! 😍

[Noah @NoahKingJr]

That’s enough LinkedIn for today

[Football Tweet ⚽ @Footballtweet]

🦸‍♂️ This dad is my new hero.

He's been trying to buy the giant adidas FIFA World Cup 2026 Trionda ball on display and 𝗛𝗘 𝗙𝗜𝗡𝗔𝗟𝗟𝗬 𝗗𝗜𝗗 𝗜𝗧.

I love this guy.

[Dave W Plummer @davepl1968]

This is the entire source to BSD UNIX's malloc():
Learn more: https://t.co/NwrTzkY4bC

[Mr PitBull Stories @MrPitbull07]

In 1958, a divorced single mom got fired from her secretary job for being a bad typist.

21 years later, she sold her side hustle for $47.5 million.

And her teenage helper would go on to help invent MTV.

Her name was Bette Nesmith Graham.

Before she became a millionaire inventor, she was a struggling single mother in Dallas with no college degree and very few options.

She married young during WWII.

By 22, she was divorced, raising a son alone, and trying to survive on secretary jobs.

She eventually became an executive secretary at Texas Bank & Trust.

There was just one problem:

She was a terrible typist.

The bank had recently installed new IBM electric typewriters that made correcting mistakes almost impossible.

One typo could mean retyping an entire page.

Her son later remembered watching her sit at the kitchen table in “tears of panic,” terrified she’d lose her job.

But Bette had another skill.

She painted holiday window displays at the bank for extra money.

One day, while painting over a mistake on a window, she had a realization:

“An artist never erases mistakes. They paint over them.”

That night, she went home and mixed a white liquid in her kitchen blender using tempera paint.

She poured it into a nail polish bottle.

The next morning, she used it to cover typing errors.

It worked.

For five years, her boss never noticed.

Other secretaries did.

Soon, women from offices across the city were asking for bottles.

Bette started making batches at home with help from her teenage son, Michael, and his friends.

She called the product “Mistake Out.”

Then came the twist.

In 1958, she accidentally typed the name of her side business onto a company letter.

Her boss fired her immediately.

It became the best thing that ever happened to her.

She renamed the product Liquid Paper and focused on it full-time.

Orders exploded.

By the late 1960s, she was selling over a million bottles a year.

By the 1970s, 25 million bottles annually.

Then she did something even more unusual:

She built one of the most progressive workplaces in America.

Her company offered:
• child care
• continuing education
• leadership roles for women
• jobs for disabled workers
• integrated staffing

This was decades before most corporations even considered those ideas.

In 1979, with failing health, Bette sold Liquid Paper to Gillette for $47.5 million.

Six months later, she died at age 56.

Half her fortune went to women-focused charities.

The other half went to her son.

That son was Michael Nesmith.

Yes the same Michael Nesmith from The Monkees.

And with the money from Liquid Paper royalties, he funded a small experimental cable TV project called PopClips.

It featured short films set to music.

PopClips became the direct prototype for MTV.

So one woman’s “typing mistake” helped create:
• a multimillion-dollar company
• one of America’s most progressive workplaces
• and the blueprint for the modern music video era

Bette Graham proved something her old boss never understood:

The mistake wasn’t the failure.

It was the opportunity.

[Miles Cranmer @MilesCranmer]

This is an insane paper and I love it

https://t.co/DP8OR5NJf2

[Tib3rius @0xTib3rius]

Happy Birthday Whit Diffie. 🔥

[𝕡𝕨𝕟𝕚𝕖 @0day_ninja]

ARM added Pointer Authentication as a hardware defense against ROP attacks. It cryptographically signs pointers using keys stored inside the CPU itself. Researchers defeated it using speculative execution. The CPU speculatively checks wrong signatures, rolls back before raising an exception, and leaks just enough to brute force the key. The hardware mitigation against speculation attacks was broken by a speculation attack.

Source: https://t.co/B40Y6U9SdX

[Anish Moonka @anishmoonka]

The Hunger Games began with a woman, a TV remote, and one restless night flipping channels. She landed on a reality show, then live footage of the Iraq war, and the two blurred into one thing in her head. Every name in it was picked on purpose.

The country itself is called Panem. That comes from an old Latin phrase, "panem et circenses," meaning "bread and circuses." A Roman writer used it to describe a simple way to control people: keep them fed, keep them entertained, and they stop asking for real power. That idea is the whole way the Capitol stays in charge, sitting right there in the name.

The villains are Roman too. The president's first name is Coriolanus, taken from a Roman general known for looking down on ordinary people. The man who runs the Games is named Seneca, after a real advisor to the emperor Nero. The real Seneca was forced by his ruler to take his own life. In the film, the character Seneca is locked in a room with one bowl of poison berries and nothing else. The author hid a 2,000-year-old death inside a character's name.

The arrow is the moment everything turns on. At the end, the hated old president, Snow, is tied to a post and waiting to die, and Katniss is handed the bow to finish him. By the time she lifts it, the rebel leader about to take power, a woman named Coin, has just pushed to hold a brand new Hunger Games using Capitol children. And Katniss is sure that Coin ordered the attack that killed her little sister. So she turns and puts the arrow through Coin instead, killing the next tyrant before the crowd kills the old one.

That one move is the whole point of the story. Take down the king, and the throne is still sitting there, waiting for the next person ruthless enough to climb into it.

All of it grew from one writer, Suzanne Collins, and a TV remote. The books have sold more than 100 million copies in 53 languages. The five films made around 3.35 billion dollars, which puts them among the 20 biggest movie series ever made. A sixth, Sunrise on the Reaping, lands in theaters on November 20, 2026.

The crowd that turns on Snow is the same crowd the Capitol kept fed and entertained for decades. That is the older, sharper meaning hiding under the obvious one. Bread and circuses works right up until the day the people decide they are done being fed.

[avrl ☘ @avrldotdev]

10 Concurrency Concepts you must learn:

0. Thread Safety (race conditions)
1. Locks (Mutex, RW Locks)
2. Optimistic vs pessimistic locking
3. Lock-free/CAS (compare & swap)
4. Deadlocks (detection/prevention)
5. Thread pools
6. Futures & async
7. Backpressure (producer/consumer)
8. Context switching overhead
9. Event loops vs threads

[avrl ☘ @avrldotdev]

[NASA almost lost a $280M Mars mission coz of a bug every dev studies about in college.]

The 1997 Mars Pathfinder mission had a computer glitch on the Sojourner rover which triggered repeated total system reboots.

It was a Priority Inversion bug.
A low-priority task held a mutex, but a high-priority task needed it and a medium-priority task kept preempting the low-priority task.

This led the watchdog timer (failsafe) to reboot the system wiping all data again & again.