printf("%d\n", access("/etc/passwd", "r"));
printf("%d\n", access("/etc/passwd", "w"));
printf("%d\n", access("/etc/passwd", "x"));
printf("%d\n", access("/etc/passwd", "f"));
printf("%d\n", access("/etc/whowoulddothattoetc", "r"));
printf("%d\n", access("/etc/whowoulddothattoetc", "w"));
printf("%d\n", access("/etc/whowoulddothattoetc", "x"));
printf("%d\n", access("/etc/whowoulddothattoetc", "f"));