Print a list of aws buckets along with their tags

aws-s3-buckets-with-tags.sh

#!/bin/bash
# lists all buckets along with their tags in the following format:
# bucket_name | { tag_name: tag_value }
# depends on AWS CLI and JQ

for bucket in `aws s3api list-buckets | jq .Buckets[].Name | tr -d \"`; do 
    tags=$(aws s3api get-bucket-tagging --bucket $bucket | jq -c '.[][] | {(.Key): .Value}' | tr '\n' '\t')
    echo $bucket '|' $tags
done

I tried this....but seems like AWS CLI doesn't support the command - "$aws s3api list-buckets | jq .Buckets[].Name"

Try this one:

aws s3api list-buckets | jq -r '.Buckets[].Name'

anyway to filter output to show only the buckets without any tags?

You could try this:

for BUCKET in $(aws s3api list-buckets | jq .Buckets[].Name -r); do
    RESULT=$(aws s3api get-bucket-tagging --bucket $BUCKET 2>&1)
    if [[ $RESULT =~ "(NoSuchTagSet)" ]]; then
        echo $BUCKET
    fi
done

Note you have to capture the error text and test for it rather than being able to check the response code, as unfortunately aws s3api returns a success code even if the command errors:

$ aws s3api get-bucket-tagging --bucket $BUCKET

An error occurred (NoSuchTagSet) when calling the GetBucketTagging operation: The TagSet does not exist
$ echo $?
0

update the above line and it will give you clear output
echo $bucket '|' $tags >> buckets-tags.txt

I know this is old.. But you don't need jq for the bucket list step. Also added some additional stuff to answer other questions.

for bucket in `aws s3api list-buckets --query "Buckets[].Name" --output text` ; do
    echo $bucket
    tags=$(aws s3api get-bucket-tagging --bucket $bucket 2>/dev/null| jq -cr '.[][] | {(.Key): .Value}')
    output=${tags:-"no Tags assigned"}
    echo $output
done

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