script.sh

#!/bin/bash
###########################################################
# Ussage ( * = optional ):                                #
# ./script <db-address> <db-port> *<username> *<password> #
###########################################################

if [ ! -z "$3" ]; then
    if [ ! -z "$4" ]; then
        echo "Using password authentication!"
        auth="--authenticationDatabase admin -u $3 -p $4"
    fi
fi

#echo $auth

for coll in *; do
    if [ -d "${coll}" ] ; then
        echo "$coll"
        for file in $coll/*; do
            mongoimport --drop --host $1 --port $2 --db "$coll" --collection "$(basename $file .json)" --file $file $auth
            #echo "$(basename $file .json)"
            #echo "$file"
        done
    fi
done