This is great - something I always wished I have as a tool. I haven't found it explicitly, but this is Linux-only, right? And I guess porting to other platform

This is great - something I always wished I have as a tool. I haven't found it explicitly, but this is Linux-only, right? And I guess porting to other platforms is not too trivial. Btw., why is this not written in Rust? I took a fast look at the code - very modern and nice C++11 code. And quite a few Linux dependencies (Linux headers + /proc usage).