I reinstalled Endless Sky recently, and downloaded the plugins I love to install for it. However, I could not get the integrated extractor to do a batch extraction to the plugins folder, so I went to my favourite archiving software, WinRAR. There is a Linux version available (tarball, I always struggle to get those right for some reason), but I know from experience that the Windows edition (7.20 currently) is perfect for this on Zorin OS. Just download it and install it with a right-click and install it with "install Windows Application."
It works exactly as advertised on Windows, though on Linux. No more extracting one file at a time.
The link for the Windows version, with the button for the Linux version if you would rather take that:
Was it a .rar File that You wanted to extract? If yes, You can install a rar Package in Zorin to have that Option. You can install it with sudo apt install rar