Man pages matching name b2 in section 1:

b2.1.en	debian 10 / libboost1.67-tools-dev
b2.1.en	debian 11 / libboost1.74-tools-dev
b2.1.en	debian 12 / libboost1.74-tools-dev
b2.1.en	debian 12 / libboost1.81-tools-dev