Drop all MySQL DBs (except mysql & information_schema)

For some reason I can not remember the following command. I have been using it a lot lately when testing MySQL replication.

1. mysql –skip-column-names –batch -e “show databases” | grep -E -v “mysql|information_schema” | xargs -I “@@” mysql -e “drop database @@”

This will drop all DBs except the default mysql and information_schema dbs. Then I can Rinse and Repeat this script. Of course only do this on the slave!