What's the difference between `/private/var/db/receiptss/` and `/var/db/receipts/`?
Solution 1:
The files are not duplicates, but, linked.
At the top level of the hard drive, /var is linked to /private/var; and, /tmp to /private/tmp
So, /var/anydirectory would also show up as /private/var/anydirectory. Deleting one will also delete the other.