/usr/ is in mediawiki-extensions-geshi 3.6.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/doc/
/usr/share/doc/mediawiki-extensions/
/usr/share/doc/mediawiki-extensions/geshi/
/usr/share/doc/mediawiki-extensions/geshi/README
/usr/share/doc/mediawiki-extensions-geshi/
/usr/share/doc/mediawiki-extensions-geshi/copyright
/usr/share/mediawiki-extensions/
/usr/share/mediawiki-extensions/geshi/
/usr/share/mediawiki-extensions/geshi/SyntaxHighlight_GeSHi.local.php
/usr/share/mediawiki-extensions/geshi/SyntaxHighlight_GeSHi.i18n.php
/usr/share/mediawiki-extensions/geshi/SyntaxHighlight_GeSHi.class.php
/usr/share/mediawiki-extensions/geshi/SyntaxHighlight_GeSHi.php
/usr/share/doc/mediawiki-extensions-geshi/NEWS.Debian.gz
/usr/share/doc/mediawiki-extensions-geshi/changelog.gz