https://jauu.net/categories/linux/ Recent content in Linux on Just Another Unix User Hugo -- gohugo.io en-us Sat, 04 Jul 2026 10:30:00 +0200 https://jauu.net/posts/2026-07-04-standard-function-prologue/ Sat, 04 Jul 2026 10:30:00 +0200 https://jauu.net/posts/2026-07-04-standard-function-prologue/ A quarter of every function on my Linux system begins with the same two-and-a-bit instructions, and none of them are the prologue you learned in school. I disassembled all 2,749 binaries to see what a function actually looks like when it starts. https://jauu.net/posts/2026-06-14-machine-code-analyzer/ Sun, 14 Jun 2026 11:00:00 +0200 https://jauu.net/posts/2026-06-14-machine-code-analyzer/ A small tool that disassembles an ELF binary and answers plain questions about it: how big are the functions, which instructions dominate, how much of the code is error handling, which mitigations are compiled in.