How to duplicate a MySQL database on the same server

Question

I have a large MySQL database, lets call it live_db, which I want to replicate on the same machine to provide a test system to play around with (test_db

Answer 1

Michaels answer abowe works well but does not copy events, stored procedures or triggers.

To copy those a few more switches is needed for mysqldump: --events --triggers --routines

To complement an already made copy:

mysqldump --user=username --password=passwd --no-data --no-create-info --no-create-db --events --triggers --routines live_db | mysql --user=username --password=passwd test_db