Man pages matching name procfs in section 5:

procfs.5.en	debian 10 / manpages
procfs.5.de	debian 10 / manpages-de
procfs.5.ja	debian 10 / manpages-ja
procfs.5.pl	debian 10 / manpages-pl
procfs.5.en	debian 11 / manpages
procfs.5.de	debian 11 / manpages-de
procfs.5.ja	debian 11 / manpages-ja
procfs.5.pl	debian 11 / manpages-pl
procfs.5.en	debian 12 / manpages
procfs.5.de	debian 12 / manpages-de
procfs.5.ja	debian 12 / manpages-ja
procfs.5.pl	debian 12 / manpages-pl
procfs.5.ru	debian 12 / manpages-ru