📄 dup2.c
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#include <sys\stat.h>
#include <string.h>
#include <fcntl.h>
#include <io.h>
void main(void)
{
#define STDOUT 1
int nul, oldstdout;
char msg[] = "This is a test";
nul = open("DUMMY.FIL", O_CREAT | O_RDWR,
S_IREAD | S_IWRITE);
oldstdout = dup(STDOUT);
dup2(nul, STDOUT);
close(nul);
write(STDOUT, msg, strlen(msg));
dup2(oldstdout, STDOUT);
close(oldstdout);
}
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