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OpenBSD is an operating system that's famous for its focus on security. Unfortunately, OpenBSD leader Theo states that there are only 7000 users of OpenBSD. So it's a very small but elite group, that wields a disproportionate influence; since we hear all the time about the awesome security features these guys get to use, even though we usually can't use them ourselves. Pledge is like the forbidden

redbean is a webserver in a zip executable that runs on six operating systems. The basic idea is if you want to build a web app that runs anywhere, then you download the redbean.com file, put your .html and .lua files inside it using the zip command, and then you've got a hermetic app you can deploy and share. I introduced this web server about a year ago on Hacker News, where it became the third

May 19th, 2022 @ justine's web page Logging C Functions One of my favorite features of the Cosmopolitan Libc runtime is its --ftrace flag that logs C function calls. It's the simplest system for debugging programs I've ever used and it surprises me that I found no evidence of someone having invented it before. Here's one of its most important use cases. Have you ever had you debugger stupified by

The Lambda Calculus is a programming language with a single keyword. It's the Turing tarpit discovered by Turing's doctoral advisor. This blog post introduces a brand new 383 byte implementation of binary lambda calculus as an x86-64 Linux ELF executable. Friendly portable C code and prebuilt APE binaries are provided for other platforms too. SectorLambda implements a Church-Krivine-Tromp virtual

projects llamafile single-file large language models actually portable executable pe+elf+macho+sh+zip polyglot cosmopolitan libc build once run anywhere c redbean single-file distributable web server blinkenlights emulates userspace and visualizes x86-64 execution bestline ansi x3.64 teletypewriter command session library json.cpp json parsing and serialization for baroque c++ jtckdint c23 checked

SectorLISP now supports garbage collection. This is the first time that a high-level garbage collected programming language has been optimized to fit inside the 512-byte boot sector of a floppy disk. Since we only needed 436 bytes, that means LISP has now outdistanced FORTH and BASIC to be the tiniest programming language in the world. SectorLISP consists of 223 lines of assembly. It provides a LI

Update: Please read our most recent SectorLISP v2 announcement: LISP with GC in 436 bytes The SectorLISP project has achieved its goal of creating a LISP that's tiny enough to fit in the master boot sector of a floppy disk. To the best of our knowledge, this is the tiniest LISP to date. Since a master boot record is only 512 bytes, that means LISP is now tied with FORTH to be the most lightweight

Cosmopolitan Libc makes C a build-anywhere run-anywhere language, like Java, except it doesn't need an interpreter or virtual machine. Instead, it reconfigures stock GCC and Clang to output a POSIX-approved polyglot format that runs natively on Linux + Mac + Windows + FreeBSD + OpenBSD + NetBSD + BIOS on AMD64 and ARM64 with the best possible performance. Getting Started First, download the Cosmop

Memzoom lets you view/monitor the raw memory of processes/files in your UTF-8 terminal. Memzoom is like the less command except designed for binary data with live updates. It represents non-ASCII characters using IBM Code Page 437 as a base-256 binary alphabet. It implements zooming via CTRL+MOUSEWHEEL which uses an image scaling algorithm (better than Lanczos!) that enables you to monitor large a

Memzoom lets you view/monitor the raw memory of processes/files in your UTF-8 terminal. Memzoom is like the less command except designed for binary data with live updates. It represents non-ASCII characters using IBM Code Page 437 as a base-256 binary alphabet. It implements zooming via CTRL+MOUSEWHEEL which uses an image scaling algorithm (better than Lanczos!) that enables you to monitor large a

Blinkenlights is a command line debugger that focuses on visualizing how software changes memory. It's able to emulate statically linked i8086 and x86_64-pc-linux-gnu programs on the Linux, Mac, Windows, FreeBSD, NetBSD, and OpenBSD platforms. Computers once had operator panels that provided an intimate overview of the machine's internal state at any given moment. The blinking lights would communi

24 aug 2020 @ justine's web page αcτµαlly pδrταblε εxεcµταblε One day, while studying old code, I found out that it's possible to encode Windows Portable Executable files as a UNIX Sixth Edition shell script, due to the fact that the Thompson Shell didn't use a shebang line. Once I realized it's possible to create a synthesis of the binary formats being used by Unix, Windows, and MacOS, I couldn't