Delete all the tables in MySQL database in one command

mysql_delete_all_tables_at_once.sh

# WARNING!!! This is VERY DANGEROUS command!
# Deletes ALL TABLES in $DBNAME database QUICKLY and IRREVERSIBLY!
mysql -h $DBHOST -u $DBUSER $DBNAME -p \
      -BNe 'show tables' \
| tr '\n' ',' \
| sed -e 's#,$##' \
| sed -e 'i\/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;' \
      -e 'i\DROP TABLE IF EXISTS ' \
      -e 'a\;' \
      -e 'a\/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;' \
| tr -d '\n' \
| mysql -h $DBHOST -u $DBUSER $DBNAME -p