cdbstats - print constant database statistics
reads a (seekable) constant database from its standard input and
prints a few statistics:
* records is the number of records in the database,
* d0 is the number of records at distance 0 from their hash,
* d1 is the number of records at distance 1 from their hash, etc.
cdbmake(1), cdbget(1), cdbdump(1)