old_sid           196 src/main.c         pid_t my_sid, old_sid;
old_sid           203 src/main.c         old_sid = (pid_t) strtol (sid_str, NULL, 0);
old_sid           204 src/main.c         if (old_sid == 0)
old_sid           212 src/main.c         return (old_sid != my_sid);