/usr/ is in octave3.2-emacsen 3.2.4-12.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/emacsen-common/
/usr/lib/emacsen-common/packages/
/usr/lib/emacsen-common/packages/install/
/usr/lib/emacsen-common/packages/install/octave3.2-emacsen
/usr/lib/emacsen-common/packages/remove/
/usr/lib/emacsen-common/packages/remove/octave3.2-emacsen
/usr/bin/
/usr/bin/octave-tags-3.2.4
/usr/share/
/usr/share/man/
/usr/share/man/man1/
/usr/share/man/man1/octave-tags-3.2.4.1.gz
/usr/share/doc/
/usr/share/doc/octave3.2-emacsen/
/usr/share/doc/octave3.2-emacsen/copyright
/usr/share/emacs/
/usr/share/emacs/site-lisp/
/usr/share/emacs/site-lisp/octave3.2-emacsen/
/usr/share/emacs/site-lisp/octave3.2-emacsen/octave-hlp.el
/usr/share/emacs/site-lisp/octave3.2-emacsen/octave-inf.el
/usr/share/emacs/site-lisp/octave3.2-emacsen/octave-mod.el
/usr/share/doc/octave3.2-emacsen/changelog.Debian.gz