**To validate a log file** The following ``validate-logs`` command validates the logs for ``Trail1``:: aws cloudtrail validate-logs --trail-arn arn:aws:cloudtrail:us-east-1:123456789012:trail/Trail1 --start-time 20160129T19:00:00Z Output:: Validating log files for trail arn:aws:cloudtrail:us-east-1:123456789012:trail/Trail1 between 2016-01-29T19:00:00Z and 2016-01-29T22:15:43Z Results requested for 2016-01-29T19:00:00Z to 2016-01-29T22:15:43Z Results found for 2016-01-29T19:24:57Z to 2016-01-29T21:24:57Z: 3/3 digest files valid 15/15 log files valid