I remember this too. Very early on there were both proc and a /dev/kmem versions of ps and maybe top too. Yep, found it: https://www.ibiblio.org/pub/historic-l

I remember this too. Very early on there were both proc and a /dev/kmem versions of ps and maybe top too. Yep, found it: https://www.ibiblio.org/pub/historic-linux/ftp-archives/sunsite.unc.edu/Sep-29-1996/system/Status/ps/INDEX.html https://www.ibiblio.org/pub/historic-linux/ftp-archives/suns... And the Linux kernel CREDITS file has an entry mentioning it too: N: Rick Sladkey D: utility hacker: Emacs, NFS server, mount, kmem-ps, UPS debugger, strace, GDB [...]