void *emallocz(unsigned int size); /* allocates zero-initialized memory, exits on error */
void eprint(const char *errstr, ...); /* prints errstr and exits with 1 */
void spawn(const char *arg); /* forks a new subprocess with arg's cmd */
void *emallocz(unsigned int size); /* allocates zero-initialized memory, exits on error */
void eprint(const char *errstr, ...); /* prints errstr and exits with 1 */
void spawn(const char *arg); /* forks a new subprocess with arg's cmd */