Transfer Mongo Database Between Servers

transfer.sh

#!/bin/bash

# Author: mrfrase3
# run:
# chmod +x ./transfer.sh
# ./transfer.sh <oldURI> <newURI> <oldDBName> <newDBName>

# e.g.
# ./transfer.sh "mongodb://olduser:oldpass@old-server.com/old-db" "mongodb://newuser:newpass@new-server.com/new-db" "old-db" "new-db"

mongodump --uri="$1" --gzip --archive="transfer.gz"

mongorestore --nsFrom "$3.*" --nsTo "$4.*" --uri "$2" --drop  --gzip --archive="transfer.gz"

rm transfer.gz

I keep getting annoyed having to refer to the docs every time I want to do this