Originally Posted by MoodyBlues
That's a good one! I don't recall ever seeing the plus sign before. However, my good friend Google led me to this page
which I think will help you out, at least as a starting point. Seems to have something to do with ACLs (access control lists).
Thanks! I had a feeling it was an ACL thing. Since I've never had much need to use Linux ACLs, that's one area that I've been deficient in. Now it looks like setfacl is just the ticket for setting default permissions on directories, so I don't have to hand-edit them every time I add files. Sweet!