Man pages matching name gfuser in section 1:

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