/usr/share/icons/hicolor/256x256/ is in hicolor-icon-theme 0.12-1.
This file is owned by root:root, with mode 0o755.
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/usr/share/icons/hicolor/256x256/actions/
/usr/share/icons/hicolor/256x256/animations/
/usr/share/icons/hicolor/256x256/apps/
/usr/share/icons/hicolor/256x256/categories/
/usr/share/icons/hicolor/256x256/devices/
/usr/share/icons/hicolor/256x256/emblems/
/usr/share/icons/hicolor/256x256/emotes/
/usr/share/icons/hicolor/256x256/filesystems/
/usr/share/icons/hicolor/256x256/intl/
/usr/share/icons/hicolor/256x256/mimetypes/
/usr/share/icons/hicolor/256x256/places/
/usr/share/icons/hicolor/256x256/status/
/usr/share/icons/hicolor/256x256/stock/
/usr/share/icons/hicolor/256x256/stock/chart/
/usr/share/icons/hicolor/256x256/stock/code/
/usr/share/icons/hicolor/256x256/stock/data/
/usr/share/icons/hicolor/256x256/stock/form/
/usr/share/icons/hicolor/256x256/stock/image/
/usr/share/icons/hicolor/256x256/stock/io/
/usr/share/icons/hicolor/256x256/stock/media/
/usr/share/icons/hicolor/256x256/stock/navigation/
/usr/share/icons/hicolor/256x256/stock/net/
/usr/share/icons/hicolor/256x256/stock/object/
/usr/share/icons/hicolor/256x256/stock/table/
/usr/share/icons/hicolor/256x256/stock/text/