cwl is a commandline application for discovering and tailing AWS CloudWatch
log groups. It's multiregional in nature making it straighforward to e.g. monitor
replicated Lambda@Edge logs.
cwl can return all log groups in all regions with groups and optionally apply
a prefix filter using --prefix.
It can also tail groups named using the schema from groups (group@region) with
tail and optionally return JSON (instead of \t separated strings) using
--json.