打开终端，输入:

mongo 

下面的命令应该显示列出的数据库:

show dbs 

/* the <dbname> is the database you'd like to drop */
use <dbname> 

/* the below command will delete the database */
db.dropDatabase()  

终端输出如下:

{
  "dropped": "<dbname>",
  "ok": 1
}

使用python删除MongoDB数据库:

import argparse

import pymongo


if __name__ == "__main__":
    """
    Drop a Database.
    """

    parser = argparse.ArgumentParser()
    parser.add_argument("--host", default='mongodb://localhost:27017',
                        help="mongodb URI [default: %(default)s]")
    parser.add_argument("--database", default=None,
                        help="database name: %(default)s]")

    args = parser.parse_args()

    client = pymongo.MongoClient(host=args.host)

    if args.database in client.list_database_names():
        client.drop_database(args.database)
        print(f"Dropped: '{args.database}'")
    else:
        print(f"Database '{args.database}' does not exist")

其他方式:

echo "db.dropDatabase()" | mongo <database name>

你也可以使用"heredoc":

mongo localhost/db <<EOF
db.dropDatabase()
EOF

输出结果如下:

mongo localhost/db <<EOF
db.dropDatabase()
EOF
MongoDB shell version: 2.2.2
connecting to: localhost/db
{ "dropped" : "db", "ok" : 1 }    
bye

如果你想要更复杂的命令序列，我喜欢使用heredocs。

从mongo shell中使用以下命令删除db

use <database name>; 
db.dropDatabase();

在终端执行:

mongo // To go to shell

show databases // To show all existing databases.

use <DATA_BASE> // To switch to the wanted database.

db.dropDatabase() // To remove the current database.