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#include "apue.h"
#include <fcntl.h>
int
main(int argc, char *argv[])
{
if (argc != 2)
err_quit("usage: a.out <pathname>");
if (access(argv[1], R_OK) < 0)
err_ret("access error for %s", argv[1]);
else
printf("read access OK\n");
if (open(argv[1], O_RDONLY) < 0)
err_ret("open error for %s", argv[1]);
else
printf("open for reading OK\n");
exit(0);
}