Confusing ls -l format

[Peter Flynn]

On 12/08/2020 20:56, MR ZenWiz wrote:
> In Ubuntu 20.04, when I do a long listing of, say, my home directory,
> I see this in the listing:
> 
> drwxr-xr-x  2 mrichter domain users   4096 Feb 11  2020 Documents
> 
> All but one of the files and directories listed show "domain" between
> user and group id.
> 
> If I list with -o, both the "domain" and the group name disappear.
> 
> What is that "domain" piece?
> 
> AFAICT, it mainl prevents locate and find from working properly -
> neither one can see the files in one of those domain directories.
> 
> I tried to Google for this and Google doesn't seem to understand the questions.
> 
> What does it mean and how can I find or locate around it?

Can you show us the contents of the file /etc/group

Peter