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Commands from an earlier session seem to vanish, or history from multiple open terminals overwrites itself instead of combining. Here's how history file writing actually works, and the specific settings that fix each symptom.
Re-running the last command with sudo, or fuzzy-searching back through everything you've typed today, both rely on the same underlying mechanism — a persisted, indexed log of your previous commands.
Released February 13, 2005 by Swedish developer Axel Liljencrantz, Fish chose sensible-by-default behavior and built-in syntax highlighting over POSIX compatibility — a genuinely different bet than Bash or Zsh made.
Distributed starting with the second Berkeley Software Distribution in 1979, Bill Joy's C shell introduced features — command history, aliases, filename completion — that nearly every shell since has copied in some form.
Posted to the alt.sources Usenet newsgroup by a Princeton student in 1990, Zsh combined the strongest interactive features of several existing shells — and, decades later, would become the default shell on macOS.
Every shell in daily use today — Bash, Zsh, tcsh, fish — descends from a lineage that started with a genuinely minimal 1971 command interpreter, branching twice into distinct, still-visible family trees.
Released as beta version .99 on June 8, 1989, Bash was built for the GNU Project as a genuinely free replacement for the Bourne shell — and would eventually become the default shell on more systems than any of the proprietary shells it set out to replace.
Before WSL let Windows run real Linux binaries, Microsoft tried and abandoned a different compatibility project entirely. Here's the actual path from that cancellation to today's tightly-integrated WSL2.
Before WSL let Windows run real Linux binaries, Microsoft was building a bridge to run Android apps on Windows 10 Mobile instead. That project was shelved in February 2016 — clearing the way for what came next.
Because remediation worked, January 1, 2000 passed quietly, and some people concluded the whole thing had been overblown from the start. The systems that skipped the fix tell a very different story.
The Apple I and II are often credited as the birth of personal computing. A different machine, from a company most people have never heard of, beat them to market by more than a year.
One of computing's most-repeated quotes has no verified source, and Gates has explicitly and repeatedly denied ever saying it. Here's what the actual paper trail shows — and what he really said instead.
ENIAC is the name most people learn as the first electronic computer. A 1973 federal court ruling says otherwise — and it turned on evidence most retellings of this story leave out entirely.
One of the most repeated political misquotes in tech culture. Here's the exact sentence Gore actually said, on the record, and how three days of mockery turned it into something he never claimed.
A computer once filled a room and required a specialized staff to operate. The path to a device that fits in a pocket wasn't one invention — it was a compounding sequence of separate breakthroughs across decades.
Through 1983, US video game console and cartridge sales began an unprecedented decline that would erase roughly 97% of the market's value within two years, taking Atari's fortunes down with it.
Two-digit year fields threatened to make systems worldwide misinterpret 2000 as 1900. Billions were spent fixing it in advance — which is exactly why, to many observers afterward, it looked like the whole thing had been overblown.
Internet companies with no profits, and sometimes no meaningful revenue, reached billion-dollar valuations through the late 1990s. The Nasdaq's collapse starting in 2000 erased trillions in value in under two years.
Tim Berners-Lee's first website had already been running quietly at CERN since December 1990. In August 1991, he posted a public invitation to collaborate — the moment the web actually became something the wider world could join.
Shawn Fanning's peer-to-peer file-sharing tool went live in June 1999, launched out of a small Hull, Massachusetts office. Within two years it would be shut down by court order — but not before changing the music industry permanently.
A graduate student's experiment to measure the internet's size instead knocked out an estimated 10% of it in a single night. The Morris Worm produced the first felony conviction under US computer crime law.
A Cornell graduate student's self-replicating program, released from MIT's network on a November night in 1988, spread far faster and further than its own author reportedly intended.
A Stanford research project on ranking web pages by their link structure became a legally registered company on a single day in September 1998 — the formal starting point for what would become the dominant search engine.
US video game revenue collapsed by roughly 97% in under two years. It wasn't one bad game that caused it — it was market oversaturation, and the rebuilding afterward reshaped the industry's structure permanently.
Priced at $1,565 with 16KB of RAM and no disk drive, the IBM 5150 didn't look like a revolution on paper. Its open architecture is what made it one anyway.
A moth taped into a 1947 logbook is one of computing's most-repeated stories — and one of its most-garbled. Here's what the primary source, the logbook itself, actually shows.
This blog covers operating systems and infrastructure in technical depth. This category exists for the events, products, and moments that shaped the industry those systems live in — verified, dated, and sourced.
A company with no profit went public at $28 a share and closed its first day at $58.25, more than doubling in value in hours. Many historians point to this single afternoon as the moment internet mania actually began.
The first beta release of Haiku R1 arrived on September 28, 2018 — a milestone that had been anticipated for years, marking the project's transition from alpha-quality software toward an eventual stable 1.0.
Be Inc. gave away BeOS 5 Personal Edition for free, installable as a single file that lived inside your existing Windows or Linux system. More than 100,000 people pre-registered before it even launched.
The company behind BeOS — the operating system Haiku would later reimplement as open source — completed its IPO in July 1999, at the height of the dot-com boom, years before the open-source project this blog covers even began.
Sony sued Connectix over its Virtual Game Station PS1 emulator, arguing that copying the PlayStation BIOS during development was copyright infringement. The Ninth Circuit disagreed — and the ruling still underpins console emulation's legal footing today.
On June 29, 1994, a Usenet post to comp.os.msdos.apps proposing a public-domain DOS kicked off what would be renamed Free-DOS weeks later — a direct response to Microsoft's plans to fold MS-DOS into Windows 95.
Released November 22, 1994 and rebased on 4.4BSD-Lite, FreeBSD 2.0 was the first release legally clear of the USL v. BSDi lawsuit's shadow — the release that secured the project's legal future.
Why software emulation of games and computers became its own discipline, who started the project most responsible for legitimizing it, and how a single court case settled whether any of this was legal in the first place.
How a well-regarded but commercially unsuccessful 1990s operating system, killed off by an acquisition, was rebuilt from scratch as open source by the community that refused to let it disappear.
The history, goals, and real-world use cases behind FreeDOS, the open-source, actively-maintained continuation of the MS-DOS-compatible operating system line.
How FreeBSD began in 1993 as a patchset for a struggling hobbyist Unix, who started it, and why it exists as a separate project from NetBSD and OpenBSD.
The real story behind Linus Torvalds' 1991 Usenet post, what it actually said, and how a self-described hobby project became the kernel running most of the internet.
How Apple's 1996 acquisition of NeXT, and Steve Jobs' return, turned NeXTSTEP into the Unix foundation underneath every Mac sold today.
How Microsoft's 1975 founding led, eighteen years later, to hiring a DEC operating-system veteran to build Windows NT from scratch.
How Google's Site Reliability Engineering team (2003) and the DevOps movement (2009) emerged independently, from different motivations, and became closely linked practices.