It looks a bit as if you have a shell at the remote end of your USB / serial connection.

If any of the commands actually takes time to complete, you need to give the other system time to react instead of writing commands to it as fast as you can.

Maybe also consider looking at the results the remote end sends you, like error output etc.

In reply to Re: copy is not happening using by Corion
in thread copy is not happening using by Anonymous Monk

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