/proc in Linux is nothing like /proc in Plan 9 though. Not only that the exported files are completely different conceptually and in their internal format, but

/proc in Linux is nothing like /proc in Plan 9 though. Not only that the exported files are completely different conceptually and in their internal format, but on Linux I can't bind /proc from another box and do remote debugging with tools that know nothing about where the process runs. Also Linux union mounts are clunky and not as useful as they are in Plan 9 because you can't have private namespaces if you are not root.