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→Check that the camera service is running on the raspberry pi
<syntaxhighlight lang="bash">screen -R camera</syntaxhighlight>
*This will connect to the screen session started at boot. You will see 'zzzz...' periodically as the pi waits for commands. You are ready to acquire images!
*To exit screen, do the following key combination in terminal:''Ctrl-A D''*this . This will leave screen and the camera service running. You can exit ssh if you wish and everything will still be good to go. More details about gnu screen [http://aperiodic.net/screen/quick_reference here]
==Check for previous images and clear out lfimages directory==
*Open another terminal and log on to the pi with ssh as outlined above. You will use this window to clear out the lightfield images from the pi, and monitor the jpgs as they are acquired.
