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#include <unistd.h> // link, unlink
#include <stdio.h> // perror

int main(int argc, char* argv[]) {
	if(link(argv[1], argv[2]) < 0) {
		perror("link");
		return 1;
	}
	if(unlink(argv[1]) < 0) {
		perror("unlink");
		return 2;
	}
}