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Tip to repeat command on terminal

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I was debugging the ADC on the beaglebone( B) and wanted ADC data on AIN5 to be streamed out. Found a good tip on stack overflow to repeat data every n(millisecond) using sleep( other than watch). Watch clears the screen every interval and does not allow fractional time.

Below command will dump ADC data every 1/2 a second.

while true; do cat /sys/devices/ocp.3/helper.15/AIN5; sleep .5; done
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