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I need to store a file on my app's storage (for example inside /raw/ or /assets/) and copy it into a folder inside a folder in /system/, I know it needs root access and to make the system partition writable, and I did it with 

Runtime.getRuntime().exec("su");
Runtime.getRuntime().exec("mount -o rw,remount /system/");

But I can't just use cp or cat for some unknown reasons, what's the best and easiest way to do this?

Sventra
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  • https://stackoverflow.com/q/19218775/115145 https://stackoverflow.com/q/22903540/115145 – CommonsWare Jun 02 '18 at 19:45
  • @CommonsWare Can't make that to work for me, I don't know why tho – Sventra Jun 03 '18 at 03:32
  • You might consider asking a separate Stack Overflow question, providing a [mcve] showing what you tried. In there, explain in detail what "Can't make that to work for me" means. – CommonsWare Jun 03 '18 at 10:27

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