There's a whole range of them, some of which are folders with Unix Executable Files inside them. In all cases the duplicates, when examined using Get Info, appear to be exactly the same...dates created, modified, et cetera.
Some names are:
.3lbxjVRJ8r
.AutoBindDone
.background (which is a Folder with a Unix Executable File)
.38 Special (which is a MacPaint Image)
.3246584E-0CF8-4153-835D-C7D952862F9D
.AccessibilityAPIEnabled
Have you done a command-I to see if they're locked?
Yes but, even after unlocking them, they won't allow themselves to be removed to trash. Also, unlocking one also unlocks every duplicate.
You can to try the same rm command but preceded by sudo(space): sudo rm -rf(space).
Try the command sudo rm -rf. Be sure to leave a space after -rf After you drag the file into Terminal and press Return, enter your administrator password and press Return again.
It still rejects the attempt to remove and advises "Permission Denied"
Unless it's just coincidental, I do notice that I am seeing the spinning beachball periodically when in regular use of the computer. Prior to this, I almost never saw it.
Is this one of those times when you just scratch your head and keep on walking?