Man pages matching name argv0 in section 1:

argv0.1.en	debian 10 / ucspi-tcp
argv0.1.en	debian 10 / ucspi-tcp-ipv6
argv0.1.en	debian 11 / ucspi-tcp
argv0.1.en	debian 11 / ucspi-tcp-ipv6
argv0.1.en	debian 12 / ucspi-tcp
argv0.1.en	debian 12 / ucspi-tcp-ipv6