hashstat - report command hash-table efficiency
hashstat
This command is a C-shell built-in command.
The hashstat(1) command prints a statistics line indicating how effective the internal hash table has been at locating commands (and avoiding calls to exec). An exec is attempted for each component of the path where the hash function indicates a possible match, and in each component that does not begin with a '/'.
On computers without vfork, prints only the number and size of hash buckets.