Within the file manager (Nautilus), you can customize it a bit through Edit -> Preferences.
I set default view to
List View and added some additional default columns. Adding the
owner column displays the machine username and full name of the user (given on install). Like this:
Name | Size | Group | Owner | Permissions file.txt | 1.0 kB | john | john - John Doe | -rw-r--r--
How do I remove the full name? So it displays like this:
Name | Size | Group | Owner | Permissions file.txt | 1.0 kB | john | john | -rw-r--r--
See how it says
john - John Doe?