root@ubuntu:/sys/class/gpio# ls
export  gpiochip496  unexport
root@ubuntu:/sys/class/gpio# echo 496 > /sys/class/gpio/export
root@ubuntu:/sys/class/gpio# echo 497 > /sys/class/gpio/export
root@ubuntu:/sys/class/gpio# echo 498 > /sys/class/gpio/export
root@ubuntu:/sys/class/gpio# echo 499 > /sys/class/gpio/export
root@ubuntu:/sys/class/gpio# echo 500 > /sys/class/gpio/export
root@ubuntu:/sys/class/gpio# echo 501 > /sys/class/gpio/export
root@ubuntu:/sys/class/gpio# echo 502 > /sys/class/gpio/export
root@ubuntu:/sys/class/gpio# echo 503 > /sys/class/gpio/export
root@ubuntu:/sys/class/gpio# echo 504 > /sys/class/gpio/export
root@ubuntu:/sys/class/gpio# echo 505 > /sys/class/gpio/export
root@ubuntu:/sys/class/gpio# echo 506 > /sys/class/gpio/export
root@ubuntu:/sys/class/gpio# echo 507 > /sys/class/gpio/export
root@ubuntu:/sys/class/gpio# echo 508 > /sys/class/gpio/export
root@ubuntu:/sys/class/gpio# echo 509 > /sys/class/gpio/export
root@ubuntu:/sys/class/gpio# echo 510 > /sys/class/gpio/export
root@ubuntu:/sys/class/gpio# echo 511 > /sys/class/gpio/export
root@ubuntu:/sys/class/gpio# echo out > /sys/class/gpio/gpio496/direction
root@ubuntu:/sys/class/gpio# echo out > /sys/class/gpio/gpio497/direction
root@ubuntu:/sys/class/gpio# echo out > /sys/class/gpio/gpio498/direction
root@ubuntu:/sys/class/gpio# echo out > /sys/class/gpio/gpio499/direction
root@ubuntu:/sys/class/gpio# echo out > /sys/class/gpio/gpio500/direction
root@ubuntu:/sys/class/gpio# echo out > /sys/class/gpio/gpio501/direction
root@ubuntu:/sys/class/gpio# echo out > /sys/class/gpio/gpio502/direction
root@ubuntu:/sys/class/gpio# echo out > /sys/class/gpio/gpio503/direction
root@ubuntu:/sys/class/gpio# echo out > /sys/class/gpio/gpio504/direction
root@ubuntu:/sys/class/gpio# echo out > /sys/class/gpio/gpio505/direction
root@ubuntu:/sys/class/gpio# echo out > /sys/class/gpio/gpio506/direction
root@ubuntu:/sys/class/gpio# echo out > /sys/class/gpio/gpio507/direction
root@ubuntu:/sys/class/gpio# echo out > /sys/class/gpio/gpio508/direction
root@ubuntu:/sys/class/gpio# echo out > /sys/class/gpio/gpio509/direction
root@ubuntu:/sys/class/gpio# echo out > /sys/class/gpio/gpio510/direction
root@ubuntu:/sys/class/gpio# echo out > /sys/class/gpio/gpio511/direction
root@ubuntu:/sys/class/gpio# echo 1   > /sys/class/gpio/gpio496/value
root@ubuntu:/sys/class/gpio# echo 1   > /sys/class/gpio/gpio497/value
root@ubuntu:/sys/class/gpio# echo 1   > /sys/class/gpio/gpio498/value
root@ubuntu:/sys/class/gpio# echo 1   > /sys/class/gpio/gpio499/value
root@ubuntu:/sys/class/gpio# echo 1   > /sys/class/gpio/gpio500/value
root@ubuntu:/sys/class/gpio# echo 1   > /sys/class/gpio/gpio501/value
root@ubuntu:/sys/class/gpio# echo 1   > /sys/class/gpio/gpio502/value
root@ubuntu:/sys/class/gpio# echo 1   > /sys/class/gpio/gpio503/value
root@ubuntu:/sys/class/gpio# echo 1   > /sys/class/gpio/gpio504/value
root@ubuntu:/sys/class/gpio# echo 1   > /sys/class/gpio/gpio505/value
root@ubuntu:/sys/class/gpio# echo 1   > /sys/class/gpio/gpio506/value
root@ubuntu:/sys/class/gpio# echo 1   > /sys/class/gpio/gpio507/value
root@ubuntu:/sys/class/gpio# echo 1   > /sys/class/gpio/gpio508/value
root@ubuntu:/sys/class/gpio# echo 1   > /sys/class/gpio/gpio509/value
root@ubuntu:/sys/class/gpio# echo 1   > /sys/class/gpio/gpio510/value
root@ubuntu:/sys/class/gpio# echo 1   > /sys/class/gpio/gpio511/value
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio496/value
1
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio497/value
1
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio498/value
1
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio499/value
1
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio500/value
1
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio501/value
1
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio502/value
1
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio503/value
1
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio504/value
1
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio505/value
1
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio506/value
1
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio507/value
1
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio508/value
1
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio509/value
1
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio510/value
1
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio511/value
1
root@ubuntu:/sys/class/gpio# echo 0   > /sys/class/gpio/gpio496/value
root@ubuntu:/sys/class/gpio# echo 0   > /sys/class/gpio/gpio497/value
root@ubuntu:/sys/class/gpio# echo 0   > /sys/class/gpio/gpio498/value
root@ubuntu:/sys/class/gpio# echo 0   > /sys/class/gpio/gpio499/value
root@ubuntu:/sys/class/gpio# echo 0   > /sys/class/gpio/gpio500/value
root@ubuntu:/sys/class/gpio# echo 0   > /sys/class/gpio/gpio501/value
root@ubuntu:/sys/class/gpio# echo 0   > /sys/class/gpio/gpio502/value
root@ubuntu:/sys/class/gpio# echo 0   > /sys/class/gpio/gpio503/value
root@ubuntu:/sys/class/gpio# echo 0   > /sys/class/gpio/gpio504/value
root@ubuntu:/sys/class/gpio# echo 0   > /sys/class/gpio/gpio505/value
root@ubuntu:/sys/class/gpio# echo 0   > /sys/class/gpio/gpio506/value
root@ubuntu:/sys/class/gpio# echo 0   > /sys/class/gpio/gpio507/value
root@ubuntu:/sys/class/gpio# echo 0   > /sys/class/gpio/gpio508/value
root@ubuntu:/sys/class/gpio# echo 0   > /sys/class/gpio/gpio509/value
root@ubuntu:/sys/class/gpio# echo 0   > /sys/class/gpio/gpio510/value
root@ubuntu:/sys/class/gpio# echo 0   > /sys/class/gpio/gpio511/value
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio496/value
0
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio497/value
0
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio498/value
0
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio499/value
0
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio500/value
0
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio501/value
0
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio502/value
0
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio503/value
0
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio504/value
0
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio505/value
0
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio506/value
0
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio507/value
0
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio508/value
0
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio509/value
0
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio510/value
0
root@ubuntu:/sys/class/gpio# cat /sys/class/gpio/gpio511/value
0