On my Mac I can copy files using the Finder, and if the destination folder has a different owner, a window pops up and asks for credentials.
On Ubuntu or Linux Mint I don't see anything like that. Then I need to start Nautilus or Nemo from the commandline using sudo rights. I would like to get a popup whenever it is needed.
So I use Nemo (or Nautilus) just like normal and do whatever I need to do. I close it and open it another time, and at one point or another I need to copy a folder to /opt. Then it refuses because /opt is owned by root. A window pops up and asks for my sudo password or for a user that has sudo rights if the specific user has no sudo rights. The folder is copied to /opt and that's it.
Is is possible to let it work like this, with an extension or something? Do other filemanagers have this option?
Nemo already has the functionality to open a folder in a new Window with root permissions. You just have to right-click on a folder icon and select "open as root" in its context menu.
When you click on that option, you will get the gksu-popup asking for your admin account's password. After correctly entering this, a fresh second window of Nemo opens at the selected location.