Bash script to find and delete auto-generated AWS Lambda, CodeBuild and API Gateway log groups using pagination.

delete-log-groups.sh

#!/bin/bash

echo "$(date) cleaning up log groups..."
next_token=""
while true; do
    if [[ "${next_token}" == "" ]]; then
        response=$(aws logs describe-log-groups)
    else
        response=$(aws logs describe-log-groups --starting-token "$next_token")
    fi

    log_groups=$(echo "$response" | jq -r '.logGroups[].logGroupName | select(. | test("^/aws/lambda/*|^/aws/codebuild/*|^API-Gateway-Execution-Logs_*"))')
    for i in $log_groups; do
        echo "$(date) deleting log group with name $i..."
        aws logs delete-log-group --log-group-name "$i"
    done

    next_token=$(echo "$response" | jq '.NextToken')
    if [[ "${next_token}" == "null" ]]; then
        # no more results left. Exit loop...
        break
    fi
done