/usr/ is in rail 1.2.11-4.
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/compat/
/usr/lib/emacsen-common/packages/compat/rail
/usr/lib/emacsen-common/packages/install/
/usr/lib/emacsen-common/packages/install/rail
/usr/lib/emacsen-common/packages/remove/
/usr/lib/emacsen-common/packages/remove/rail
/usr/share/
/usr/share/doc/
/usr/share/doc/rail/
/usr/share/doc/rail/FAQ.rdoc
/usr/share/doc/rail/README.rdoc.gz
/usr/share/doc/rail/changelog.Debian.gz
/usr/share/doc/rail/copyright
/usr/share/doc/rail/old/
/usr/share/doc/rail/old/00FAQ
/usr/share/doc/rail/old/00README.gz
/usr/share/emacs/
/usr/share/emacs/site-lisp/
/usr/share/emacs/site-lisp/rail/
/usr/share/emacs/site-lisp/rail/make.el
/usr/share/emacs/site-lisp/rail/rail-common.el
/usr/share/emacs/site-lisp/rail/rail-make-table.el
/usr/share/emacs/site-lisp/rail/rail-mime-example-1-13.el
/usr/share/emacs/site-lisp/rail/rail-mime-example-1-14.el
/usr/share/emacs/site-lisp/rail/rail-mime-example.el
/usr/share/emacs/site-lisp/rail/rail-mule.el
/usr/share/emacs/site-lisp/rail/rail-pj.el
/usr/share/emacs/site-lisp/rail/rail-table-flim.el
/usr/share/emacs/site-lisp/rail/rail-table-meadow.el
/usr/share/emacs/site-lisp/rail/rail-table-mule.el
/usr/share/emacs/site-lisp/rail/rail-table-semi.el
/usr/share/emacs/site-lisp/rail/rail-table-utf2000.el
/usr/share/emacs/site-lisp/rail/rail-table-xmas.el
/usr/share/emacs/site-lisp/rail/rail-user-agent.el
/usr/share/emacs/site-lisp/rail/rail-vars.el
/usr/share/emacs/site-lisp/rail/rail-xmas.el
/usr/share/emacs/site-lisp/rail/rail.el