I have a lot of json files in archive and i need to import them into mongo per one operation (i think that it might be in cycle). Have you any ideas about this?
If you are in a Linux/Unix shell you can try
for filename in *; do mongoimport -d mydb -c $filename; done
If you are on Windows:
FOR %i IN (C:\mongodbData\*.json) DO mongoimport --db dbName --collection colection --type json --file %i