4.7 Start the Greengrass Core
On the SD card, a file named greengrass is found in the /etc/init directory. This start-up script starts the Greengrass software after performing housekeeping tasks. Start Greengrass with:
# /etc/init.d/greengrass start
The Greengrass system is now running.
Log file: runtime.log
Check/tail log file to see if there is any progress:
(target)# tail -F /greengrass/ggc/var/log/system/runtime.log