folder structure by shell

Hello all , I want to find the folder structure, but walking down. I have try this code

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and this

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but .
someone who knows ?

You do not say what the problem is.

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Assumes you have privilege to write a file to root of E drive.

Hello Andy Pope , thanks for the reply, I now have this code

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and with this code i read the dir structure from a hard drive .
my sincere thanks for the good clue .