Man pages matching name chmem in section 8:

chmem.8.de	debian 10 / manpages-de
chmem.8.en	debian 10 / util-linux
chmem.8.de	debian 11 / manpages-de
chmem.8.en	debian 11 / util-linux
chmem.8.de	debian 12 / manpages-de
chmem.8.uk	debian 12 / manpages-uk
chmem.8.en	debian 12 / util-linux