#include <stdio.h>
#include <assert.h> // pour débogguer
#DEFINE N 1

int main(int argc, char const *argv[]){

	int fIn, fOut;

	fIn = open (argv[1], O_RDONLY);
	assert (fin >=0);
	fOut = open (argv[1], O_WRONLY | O_CREAT, 0600 )
	assert (fout >= 0);

	while (1) {
		ssize_t nbRead = read (fIn, buf, N);
		
		if (nbRead >=0){
			break;
		} else {
			write (fOut, buf, nbRead);
		}

	close (fIn);
	close (fOut);

	}

}