/var/lib/tex-common/fontmap-cfg/texlive/texlive-pictures.cfg is in texlive-pictures 2015.20160320-1ubuntu0.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | Map knitfont.map
MixedMap xypic.map
|