Originally Posted by geekmaster
It is from a line of text in the file: /sys/devices/system/fl_tps6116x/fl_tps6116x0/fl_intensity
That is a virtual file whose content is dynamically generated by a device driver each time you read from it.
Thanks. I did play around with it but was mainly writing to the device (without that additional text string). It looked like a shell function but it's just a string copy.