3 Erase a key or set of keys from a memcached cluster.
5 Current options. A '=' means the option takes a value.
8 Display the version of the application and then exit.
10 Diplay this message and then exit.
12 Give more details on the progression of the application.
14 Provide output only useful for debugging.
16 List which servers you wish to connect to.
18 Set the expire option for the object.