Did you know openBSD does not have this folder? I think the BSD's do not use /proc. I do not know why though.
this post was submitted on 20 Aug 2026
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/proc is quite useful when it comes to hiding root on Android.
Damn, I really could have made a lot of use of this over the last 20+ years.. Thanks for sharing!
I seem to recall in an Operating Systems class we wrote a kernel module and communicated with it through the proc interface?
I may have been through "SysFS" as well? In /sys/class you can setup char dev IO with a kernel module (and more). Very helpful for userspace <-> kernel communication (like DMA drivers for userspace applications)
Hmm yeah maybe it was /sys, it’s been so long I can’t remember.
I seem to recall echoing into a file to set some value which we then checked the value of in the kernel module code. It was just a hello world type of thing for a college class.
Thank you for sharing this. Got a new creator to check out now!
It's wonderful but can be less complete or even missing typically due to settings (e.g., security), the environment (e.g., a container), or both.