Please use Synaptic: Installing packages using Synaptic Package Manager GUI
Sorry @pengfei , using Google translate…
I accidentally uninstalled the file manager, how can I reinstall it?
What version of Zorin are you using?
As each different desktop may use a different file manager.
@jgordon. Google translate, this time including the first word Thunar which I think answers your question :
“I accidentally uninstalled the Thunar file manager. How do I reinstall it?”
Whoops, so a quick Google search and I found out that Thunar is the default FM for XFCE.
sudo apt-get install thunar