Man pages matching name yppush in section 8:

yppush.8.ja	debian 10 / manpages-ja
yppush.8.en	debian 10 / nis
yppush.8.ja	debian 11 / manpages-ja
yppush.8.en	debian 11 / ypserv
yppush.8.ja	debian 12 / manpages-ja
yppush.8.en	debian 12 / ypserv