Man pages matching name yuvtoppm in section 1:

yuvtoppm.1.pl	debian 10 / manpages-pl
yuvtoppm.1.en	debian 10 / netpbm
yuvtoppm.1.pl	debian 11 / manpages-pl
yuvtoppm.1.en	debian 11 / netpbm
yuvtoppm.1.en	debian 12 / netpbm