Man pages matching name gfchown in section 1:

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