Stop compute engine, detach disk, (delete snapshot id exists), create snapshot, delete disk (GCP, CLI, GCLOUD)

stop.sh

#!/usr/bin/env bash

PROJECT=<project>
ZONE=<zone>
INSTANCE=<compute-engine-instance>
DISK=<disk-name>
SNAPSHOT=<snapshot-name>
REGION=<region>

echo stop vm - - - - - - - - - - - - - - - - - - - - - -
gcloud compute instances stop $INSTANCE \
    --project=$PROJECT
    
echo detach disk - - - - - - - - - - - - - - - - - - - -
gcloud compute instances detach-disk $INSTANCE \
    --disk $DISK \
    --project=$PROJECT \
    --zone $ZONE
    
echo delete snapshot - - - - - - - - - - - - - - - - - - 
gcloud compute snapshots delete $SNAPSHOT \
    --project=$PROJECT \
    --zone $ZONE
    
echo create snapshot from disk - - - - - - - - - - - - - - - - 
gcloud compute snapshots create $SNAPSHOT \
    --project=$PROJECT \
    --source-disk=$DISK \
    --source-disk-zone=$ZONE \
    --storage-location=$REGION
    
echo delete disk - - - - - - - - - - - - - - - - - - - - - - - - 
gcloud compute disks delete $DISK \
    --zone $ZONE \
    --project=$PROJECT