/usr/share/doc/texlive-doc/generic/multido/multido-test.tex is in texlive-generic-recommended 2009-15.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/texlive-doc/generic/multido/../../../texlive-generic-recommended/generic/multido/multido-test.tex