Backup seems to be changing permissions

[Duncan H]

Originally Posted by dnanian

Because if ownership is not turned on for the source, the files on the source don't have their true owners displayed. Instead, you get fake, floating values.

The best way to allow groups of users to share files is to use group or "other" (as opposed to individual) permissions, rather than to turn ownership off. Ownership off is a pretty nasty hack in OSX, and I'd really, really strongly advise you to not use it. Instead, work "within" the system to do it the real way...

Thanks for the help. Or at least, the explanation.

I know I ought to get round to properly learning how group permissions work, so maybe this will give me the impetus to actually do it. I've tended to only pay attention to the "owner" and "others" field, and ignored the group.