3-bit or 64-bit? If you forgot which version you installed, here’s how to check it out!
In command line, just type this:
uname -m
Then you see the output:
- i686 means 32-bit
- x86_64 means 64-bit
If you’d like a GUI way, searh for and open details from Unity Dash.
Then you’ll see the result
Enjoy!