get-response.json

{
  "export": {
    "id": "eda61457-f0eb-459a-991f-f8a597bd1a15",
    "status": "SUCCEEDED",
    "items": [
      {
        "id": "1TdFtOzKlGQnckOavxlwgJuW4nc9oGU6U"
      }
    ],
    "conversions": [
      {
        "sourceFormat": "application/vnd.google-apps.appmaker",
        "destinationFormat": "application/zip"
      },
      {
        "sourceFormat": "application/vnd.google-apps.document",
        "destinationFormat": "application/vnd.openxmlformats-officedocument.wordprocessingml.document"
      },
      {
        "sourceFormat": "application/vnd.google-apps.drawing",
        "destinationFormat": "image/jpeg"
      },
      {
        "sourceFormat": "application/vnd.google-apps.form",
        "destinationFormat": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
      },
      {
        "sourceFormat": "application/vnd.google-apps.presentation",
        "destinationFormat": "application/vnd.openxmlformats-officedocument.presentationml.presentation"
      },
      {
        "sourceFormat": "application/vnd.google-apps.spreadsheet",
        "destinationFormat": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
      }
    ],
    "archives": [
      {
        "fileName": "takeout-20180910T161503Z-001.zip",
        "storagePath": "https://storage.googleapis.com/drive-bulk-export-anonymous/20180910T161503Z/4133399871716478688/eda61457-f0eb-459a-991f-f8a597bd1a15/1/717f8bc5-9ce1-4b2e-89f4-5bd60ae8603d",
        "compressedSize": "169649",
        "sizeOfContents": "169379"
      }
    ]
  },
  "percentDone": 100,
  "numFetchedFiles": 1,
  "exportJob": {
    "id": "eda61457-f0eb-459a-991f-f8a597bd1a15",
    "status": "SUCCEEDED",
    "items": [
      {
        "id": "1TdFtOzKlGQnckOavxlwgJuW4nc9oGU6U"
      }
    ],
    "conversions": [
      {
        "sourceFormat": "application/vnd.google-apps.appmaker",
        "destinationFormat": "application/zip"
      },
      {
        "sourceFormat": "application/vnd.google-apps.document",
        "destinationFormat": "application/vnd.openxmlformats-officedocument.wordprocessingml.document"
      },
      {
        "sourceFormat": "application/vnd.google-apps.drawing",
        "destinationFormat": "image/jpeg"
      },
      {
        "sourceFormat": "application/vnd.google-apps.form",
        "destinationFormat": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
      },
      {
        "sourceFormat": "application/vnd.google-apps.presentation",
        "destinationFormat": "application/vnd.openxmlformats-officedocument.presentationml.presentation"
      },
      {
        "sourceFormat": "application/vnd.google-apps.spreadsheet",
        "destinationFormat": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
      }
    ],
    "archives": [
      {
        "fileName": "takeout-20180910T161503Z-001.zip",
        "storagePath": "https://storage.googleapis.com/drive-bulk-export-anonymous/20180910T161503Z/4133399871716478688/eda61457-f0eb-459a-991f-f8a597bd1a15/1/717f8bc5-9ce1-4b2e-89f4-5bd60ae8603d",
        "compressedSize": "169649",
        "sizeOfContents": "169379"
      }
    ]
  }
}

google-drive-foler-download.sh

Downloading a folder misses half of it's content
https://productforums.google.com/forum/#!topic/drive/0rTmZmP_j0k

id=$1;
queued_json=$(curl https://takeout-pa.clients6.google.com/v1/exports?key=AIzaSyC1qbk75NzWBvSaDh6KnsjjA9pIrP4lYIE -H 'origin: https://drive.google.com' -H 'content-type: application/json' -d '{"archiveFormat":null,"archivePrefix":null,"conversions":null,"items":[{"id":"'$id'"}],"locale":null}')

export_job_id=$(echo "$queued_json" | grep -A100000 exportJob | awk -F'"' '$0~/^    "id"/{print$4}')
storage_path=''
until [ "$storage_path" ]; do
  succeeded_json=$(curl "https://takeout-pa.clients6.google.com/v1/exports/$export_job_id?key=AIzaSyC1qbk75NzWBvSaDh6KnsjjA9pIrP4lYIE" -H 'origin: https://drive.google.com')
  echo "$succeeded_json" | awk -F'"' '$0~/^  "percentDone"/{print$0}'
  echo "$succeeded_json" | grep -A100000 exportJob | awk -F'"' '$0~/^    "status"/{print$0}'
  storage_path=$(echo "$succeeded_json" | grep -A100000 exportJob | awk -F'"' '$0~/^        "storagePath"/{print$4}')
  sleep 1
done
curl -OJ $storage_path

post-response.json

{
  "export": {
    "id": "eda61457-f0eb-459a-991f-f8a597bd1a15",
    "status": "QUEUED",
    "items": [
      {
        "id": "1TdFtOzKlGQnckOavxlwgJuW4nc9oGU6U"
      }
    ],
    "conversions": [
      {
        "sourceFormat": "application/vnd.google-apps.appmaker",
        "destinationFormat": "application/zip"
      },
      {
        "sourceFormat": "application/vnd.google-apps.document",
        "destinationFormat": "application/vnd.openxmlformats-officedocument.wordprocessingml.document"
      },
      {
        "sourceFormat": "application/vnd.google-apps.drawing",
        "destinationFormat": "image/jpeg"
      },
      {
        "sourceFormat": "application/vnd.google-apps.form",
        "destinationFormat": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
      },
      {
        "sourceFormat": "application/vnd.google-apps.presentation",
        "destinationFormat": "application/vnd.openxmlformats-officedocument.presentationml.presentation"
      },
      {
        "sourceFormat": "application/vnd.google-apps.spreadsheet",
        "destinationFormat": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
      }
    ]
  },
  "exportJob": {
    "id": "eda61457-f0eb-459a-991f-f8a597bd1a15",
    "status": "QUEUED",
    "items": [
      {
        "id": "1TdFtOzKlGQnckOavxlwgJuW4nc9oGU6U"
      }
    ],
    "conversions": [
      {
        "sourceFormat": "application/vnd.google-apps.appmaker",
        "destinationFormat": "application/zip"
      },
      {
        "sourceFormat": "application/vnd.google-apps.document",
        "destinationFormat": "application/vnd.openxmlformats-officedocument.wordprocessingml.document"
      },
      {
        "sourceFormat": "application/vnd.google-apps.drawing",
        "destinationFormat": "image/jpeg"
      },
      {
        "sourceFormat": "application/vnd.google-apps.form",
        "destinationFormat": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
      },
      {
        "sourceFormat": "application/vnd.google-apps.presentation",
        "destinationFormat": "application/vnd.openxmlformats-officedocument.presentationml.presentation"
      },
      {
        "sourceFormat": "application/vnd.google-apps.spreadsheet",
        "destinationFormat": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
      }
    ]
  }
}