Command to see all Snapshots which are not being used by any AMI

Below is the command that you can use to see all Snapshots which are not being used by any AMI. It will filter through your account in the eu-west-1 region (you can modify it if necessary).

 

comm -13 <(aws ec2 describe-images –owners self –region eu-west-1 –output text –query ‘Images[*].BlockDeviceMappings[*].[Ebs.SnapshotId]’ | sort | uniq) <(aws ec2 describe-snapshots –owner-ids self –region eu-west-1 –output text –query ‘Snapshots[*].SnapshotId’ | sed ‘s/\s\+/\n/g’ | sort | uniq)

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