[Trisquel-users] Re : Root has 475.7 MB free space...

[magicbanana]

What is the file system used for your /home? If it is XFS (the default in  
Trisquel if it has not recently changed) then you cannot reduce it (to give  
more space for /) and you need to repartition everything... or remove some  
games. Indeed, and as you have already been said, the software you install  
through the package manager mostly end up in /usr (and I believe your /usr is  
in the same partition as your /).

To confirm all that could you please post the output of these two commands:
$ df -h
$ mount