Man pages matching name killall5 in section 8:

killall5.8.es	debian 10 / manpages-es-extra
killall5.8.ja	debian 10 / manpages-ja
killall5.8.pl	debian 10 / manpages-pl
killall5.8.en	debian 10 / sysvinit-utils
killall5.8.fr	debian 11 / manpages-fr
killall5.8.ja	debian 11 / manpages-ja
killall5.8.pl	debian 11 / manpages-pl
killall5.8.en	debian 11 / sysvinit-utils
killall5.8.ja	debian 12 / manpages-ja
killall5.8.en	debian 12 / sysvinit-utils