Copy files automatically from phone to USB stick through OTG

Hi everyone,
Im new i just want to know if anyone can link me an already existing thread or maybe help me to make an autorun program that automatically and silently copy file from phone to the usb stick.
Thanks in advance for your time.

What are you trying to achieve? Perhaps there's another way.

Greasedonkey said:

What are you trying to achieve? Perhaps there's another way.

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I want to insert the usb stick in the phone and then automatically copy silently all the photo on it. Is it possible?