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i create a file in my desktop then in my code (assembly8086 in linux) i try to open it but it return a negative filedescriptor!!

how can i solve this problem ?? i want a positive filedescriptor!!
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I suggest you read the documentation about the return values from system API functions. A negative value from a file open command means that the request failed. There should be some further information available from GetLastError (in Windows) or errno (Unix/Linux).
   

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