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Aug 2nd, 2015
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  1. #!/bin/sh
  2.  
  3. set -e
  4.  
  5. io=2
  6.  
  7. cd /sys/class/gpio
  8. echo $io > export
  9. echo out > gpio$io/direction
  10.  
  11. trap "echo $io > unexport; exit" 2
  12.  
  13. while true
  14. do
  15.         echo 0 > gpio$io/value
  16.         echo 1 > gpio$io/value
  17. done
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