A newer version is available. For the latest information, see the current release documentation.
The value provided indicates a given number of time-units ago to use as a reference point. All indices "older than" that point will be included.
Delete hourly Logstash indices older than 48 hours:
curator delete indices --time-unit hours --older-than 48 --timestring '%Y.%m.%d.%H' --prefix logstash