WordPress: Script to convert MySQL collation from utf8mb4 to utf8 (via http://ben.lobaugh.net/blog/201740/script-to-convert-mysql-collation-from-utf8mb4-to-utf8)

wordpress_utf8mb4-to-utf8.sh

DB="your_database_name"
USER="your_db_user"
PASS="your_db_pass"
HOST="database_hostname"
(
    echo 'ALTER DATABASE `'"$DB"'` CHARACTER SET utf8 COLLATE utf8_general_ci;'
    mysql -p $PASS -u $USER -h $HOST "$DB" -e "SHOW TABLES" --batch --skip-column-names \
    | xargs -I{} echo 'ALTER TABLE `'{}'` CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci;'
) \
| mysql -p $PASS -u $USER -h $HOST "$DB"