to 42 user/bin/cp/cp.c copy(const char *from, const char *to) to 56 user/bin/cp/cp.c tofd = open(to, O_WRONLY|O_CREAT|O_TRUNC); to 58 user/bin/cp/cp.c err(1, "%s", to); to 76 user/bin/cp/cp.c err(1, "%s", to); to 93 user/bin/cp/cp.c err(1, "%s: close", to);