Dolphin can do that! You'll need to install kio-admin and you'll get an option to "open folder as root". After you authenticate, you'll be able to e.g. move fil

Dolphin can do that! You'll need to install kio-admin and you'll get an option to "open folder as root". After you authenticate, you'll be able to e.g. move files in /etc/ See https://invent.kde.org/system/kio-admin https://invent.kde.org/system/kio-admin for details. This will be included in dolphin natively in the near future.