/usr/ is in yaws-yapp 2.0.4+dfsg-2.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/yaws-yapp/
/usr/lib/yaws-yapp/priv/
/usr/share/
/usr/share/doc/
/usr/share/doc/yaws-yapp/
/usr/share/doc/yaws-yapp/copyright
/usr/share/yaws-yapp/
/usr/share/yaws-yapp/www/
/usr/share/yaws-yapp/www/END.inc
/usr/share/yaws-yapp/www/HEAD.inc
/usr/share/yaws-yapp/www/add.yaws
/usr/share/yaws-yapp/www/add_post.yaws
/usr/share/yaws-yapp/www/index.yaws
/usr/share/yaws-yapp/www/remove.yaws
/usr/share/yaws-yapp/www/remove_post.yaws
/usr/share/yaws-yapp/www/stil.css
/usr/lib/yaws-yapp/priv/docroot
/usr/share/doc/yaws-yapp/README
/usr/share/doc/yaws-yapp/changelog.Debian.gz