/usr/ is in gosa-plugin-phpscheduleit 2.7.4+reloaded2-9ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gosa/locale/plugins/
/usr/share/
/usr/share/gosa/
/usr/share/gosa/locale/
/usr/share/gosa/locale/plugins/phpscheduleit/
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/usr/share/gosa/locale/plugins/phpscheduleit/locale/zh/
/usr/share/gosa/locale/plugins/phpscheduleit/locale/zh/LC_MESSAGES/
/usr/share/gosa/plugins/personal/
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/usr/share/gosa/locale/plugins/phpscheduleit/locale/en/LC_MESSAGES/.placeholder
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/usr/share/gosa/plugins/
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/usr/share/gosa/plugins/personal/connectivity/phpscheduleit/class_phpscheduleitAccount.inc
/usr/share/gosa/plugins/personal/connectivity/phpscheduleit/phpscheduleit.tpl
/usr/share/doc/
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/usr/share/doc/gosa-plugin-phpscheduleit/contrib/
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/usr/share/doc/gosa-plugin-phpscheduleit/contrib/phpscheduleit.schema
/usr/share/doc/gosa-plugin-phpscheduleit/copyright
/usr/share/doc/gosa-plugin-phpscheduleit/Changelog.gz
/usr/share/doc/gosa-plugin-phpscheduleit/changelog.Debian.gz