Man pages matching name getdtablesize in section 2:

getdtablesize.2.de	debian 10 / manpages-de-dev
getdtablesize.2.en	debian 10 / manpages-dev
getdtablesize.2.es	debian 10 / manpages-es
getdtablesize.2.ja	debian 10 / manpages-ja-dev
getdtablesize.2.pl	debian 10 / manpages-pl-dev
getdtablesize.2.pt	debian 10 / manpages-pt-dev
getdtablesize.2.ja	debian 11 / manpages-ja-dev
getdtablesize.2.pt	debian 11 / manpages-pt-dev