download file from google cloud compute instance
If you're connecting to the instance via https://console.cloud.google.com using
SSH for Google Cloud Platform, you can download a specific file via "Download file" from the Settings menu (accessible through the settings icon in upper right corner).
This works for me - Mac OS X
gcloud compute scp [email protected]:source-directory local-directory --zone instancezone
Before you have to set PATH correctly for using Google SDK.