sed -ri '/^f[[:blank:]]+cid-x\.map[[:blank:]]*$/c\
%f cid-x.map\
\
% the following file is generated by updmap(-sys) from the\
% KanjiMap entries in the updmap.cfg file.\
f kanjix.map\
% minimal example for Chinese and Korean users\
% improvements please to tex-live\@tug.org\
f ckx.map
' %{_texmfconfdir}/dvipdfmx/dvipdfmx.cfg