#ProcFS

Introduced in early Linux as a way to expose internal kernel data, /proc turned introspection into a superpower. Need to see CPU info? Memory usage? Active processes? It’s all just files. Unlike traditional tools that queried the system with custom code, /proc let you cat your way into real-time diagnostics. It's a filesystem, but it doesn't store data—it tells the story of your system in live detail. Even now, it's essential for system monitoring and scripting.

#Linux #ProcFS #UnixPhilosophy #SysAdminMagic

2023-11-23

A story of Docker, QEMU, and memfd_create()

Last year I stumbled across a problem with the execution of a Docker container in a CI environment. The interesting case was that this is a container for a foreign architecture, which is supported by the –platform option and there are even official images on Docker Hub for this.

Initially, the problem presented itself like this:

$ docker run -it […]

#aarch64 #arm64 #debugging #docker #foss #kernel #linux #openSource #patch #procfs #qemu

https://raimue.blog/2023/11/23/a-story-of-docker-qemu-and-memfd-create/

Patryk Krawaczyńskiagresor@infosec.exchange
2023-07-28

pspy - nieuprzywilejowany podgląd procesów Linuksa ( nfsec.pl/security/6159 ) #linux #security #procfs #twittermigration

0mp at FreeBSDmpts
2020-05-09

@xanderio @raichoo is here to stay AFAIK, but is going away. I cannot find the exact commit at the moment, but I found this: reviews.freebsd.org/D24254

0mp at FreeBSDmpts
2020-05-09

@raichoo @xanderio Uh, if I recall correctly, is not going to be available in 13.0.

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