Man pages matching name gfreg in section 1:

gfreg.1.en	debian 10 / gfarm-client
gfreg.1.ja	debian 10 / gfarm-client
gfreg.1.en	debian 11 / gfarm-client
gfreg.1.ja	debian 11 / gfarm-client
gfreg.1.en	debian 12 / gfarm-client
gfreg.1.ja	debian 12 / gfarm-client