list s3 bucket names starting with a prefix

list-s3-buckets.sh

# list buckets starting with 'codebuild'
buckets=($(aws s3api list-buckets --query 'Buckets[?starts_with(Name, `codepipeline-`) == `true`].Name' --output text))

# delete them
for b in ${buckets[@]}
do
  aws s3 rb --force s3://${b}
done

This just came in handy. I had way too many buckets and had to find a way to remove them quickly!