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post_install() { gtk-update-icon-cache -q -t -f usr/share/icons/hicolor update-desktop-database -q } post_upgrade() { gtk-update-icon-cache -q -t -f usr/share/icons/hicolor update-desktop-database -q } post_remove() { gtk-update-icon-cache -q -t -f usr/share/icons/hicolor update-desktop-database -q }