Answer
smartZ is a sample application for the BT900 and BL620 and provides a command line interface (CLI) in the style of the BlueZ HCITool and GATTTools on Linux.
For example, the command hcitool lescan will start a scan for BLE devices that are currently advertising, and gatttool- primary will discover the primary services from a BLE GATT server.
smartZ is available via https://github.com/LairdCP