/etc/texmf/updmap.d/20latex-fonts-thai-tlwg.cfg is in latex-fonts-thai-tlwg 1:0.4.17-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 | # 20latex-fonts-thai-tlwg.cfg
# You can change/add entries to this file and changes will be preserved
# over upgrades, even if you have removed the main package prior
# (not if you purged it). You should leave the following pseudo comment
# present in the file!
# -_- DebPkgProvidedMaps -_-
#
Map nf.map
Map nectec.map
Map tlwg.map
|