/usr/lib/libqtruby4shared.so.2 is in libqtruby4shared2 4:4.8.2-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/libqtruby4shared.so.2.0.0
/usr/lib/libqtruby4shared.so.2.0.0