gistfile1.sh

#!/bin/bash

filename='/tmp/newdata.json'

while read line; do
  if [ -z "$(echo $line | grep -vP "^$" | grep -vP "^//")" ]; then
    echo > /dev/null
  else
    query="db.foo_collection.insert($line)"
    echo -e "$("mongo localhost/my_db_name --eval \"'$query'\"")\n\n"
  fi
done < "$filename"