Command to flush Memcache data.

For Unix:

Here is the article which explains various ways to clear the memcache data from linux command prompt.

For Windows:

telnet localhost 11211
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
flush_all
OK
quit
Connection to localhost closed by foreign host.

MySQL Commands

This article has a list of handy MySQL commands that we use time and time again. At the bottom are statements, clauses, and functions we can use in MySQL. Below that are PHP and Perl API functions we can use to interface with MySQL. To use those PHP need to build with MySQL functionality. To use MySQL with Perl the Perl modules DBI and DBD::mysql must be configured.