**To get a value history for a parameter** This example lists the value history for a parameter. Command:: aws ssm get-parameter-history --name "welcome" Output:: { "Parameters": [ { "Name": "welcome", "Type": "String", "LastModifiedDate": 1542308384.49, "LastModifiedUser": "arn:aws:sts::123456789012:assumed-role/Administrator", "Value": "1", "Version": 1, "Labels": [] } ] }