how to create vi file or .sh file in imx8mm in Android OS

[Ruban1]

how to create vi file or .sh file in imx8mm in Android 10 OS.

Using putty or minicom after booting up of Android OS from SD card

I wanted to run a small LED blink. script

The script gpio_led.sh

#!/bin/bash
echo "GPIO LED Test"

LED=/sys/class/leds/user/brightness

while (true)
do
echo 1 > $LED
sleep 1
echo 0 > $LED
sleep 1
done

i am not able to create vi or or run the script. how to run. if any recommend kindly provide

and the path to run

[Zhiming_Liu]

Hi

This way can't be useful in android.It's very different in linux.

sh file is effective in linux rootfs, but android is using linux kernel ,not the linux rootfs.

[Ruban1]

then how i control inbuild GPIO LED . blinking the LED