/usr/bin/getmapdl is in texlive-pictures 2015.20160320-1ubuntu0.1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/bin/../share/texlive/texmf-dist/scripts/getmap/getmapdl.lua
/usr/bin/../share/texlive/texmf-dist/scripts/getmap/getmapdl.lua