proc_wait
if (proc_wait(sp, pid, sh, 1, 0))
if (proc_wait(sp,
uwait: return (proc_wait(sp, utility_pid, cmd,
(void)proc_wait(sp, sc->sh_pid, "script-shell", 0, 0);
return (proc_wait(sp, pid, cmd, 0, 0));
int proc_wait(SCR *, pid_t, const char *, int, int);