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denzfarid/unused-amis.sh

Forked from ashb/unused-amis.sh
Created January 12, 2017 01:23
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Find un-used AMIs
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unused-amis.sh
#!/bin/bash -e
set -o pipefail
# File 1 is the list of our AMIs
# File 2 is the list of AMIs used by our instances
# Column 1 is an image of ours that is not in use
# Column 2 is an AMI that is in use that isn't one of ours
# Column 3 is the list of our AMIs that are in use.
comm -23 \
<(aws ec2 describe-images --owners self | jq -r ' [.Images[].ImageId] | sort | unique | .[]') \
<(aws ec2 describe-instances | jq -r '[.Reservations[].Instances[].ImageId] | sort | unique | .[]')
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