**To modify a cache parameter group** The following ``modify-cache-parameter-group`` example modifies the parameters of the specified cache parameter group. :: aws elasticache modify-cache-parameter-group \ --cache-parameter-group-name "mygroup" \ --parameter-name-values "ParameterName=activedefrag, ParameterValue=no" Output:: { "CacheParameterGroupName": "mygroup" } For more information, see `Modifying a Parameter Group <https://docs.aws.amazon.com/AmazonElastiCache/latest/red-ug/ParameterGroups.Modifying.html>`__ in the *Elasticache User Guide*.