/usr/lib/petscdir/3.1/docs

This file is indexed.

/usr/lib/petscdir/3.1/docs is in petsc3.1-doc 3.1.dfsg-11ubuntu1.

This file is owned by root:root, with mode 0o777.

It is a symlink to /usr/lib/petscdir/3.1/../../../share/doc/petsc3.1-doc/docs