DynamoDB CLI

AWS

Export tab separated data

aws dynamodb scan `
     --table-name table_name `
     --query "Items[*].[Id.S, Status.S]" `
     --region us-wet-2 `
     --output text

Use Scan filter with count

aws dynamodb scan `
     --table-name table_name `
     --select "COUNT" `
     --region us-west-2 `
     --scan-filter file://scan.json
in scan.json
{"Status":{"ComparisonOperator":"CONTAINS", "AttributeValueList":[{"S":"none"}]}}