$EX_OK = 0x0;$EX__BASE = 0x40;$EX_USAGE = 0x40;$EX_DATAERR = 0x41;$EX_NOINPUT = 0x42;$EX_NOUSER = 0x43;$EX_NOHOST = 0x44;$EX_UNAVAILABLE = 0x45;$EX_SOFTWARE = 0x46;$EX_OSERR = 0x47;$EX_OSFILE = 0x48;$EX_CANTCREAT = 0x49;$EX_IOERR = 0x4A;$EX_TEMPFAIL = 0x4B;$EX_PROTOCOL = 0x4C;$EX_NOPERM = 0x4D;