1$EX_OK = 0x0; 2$EX__BASE = 0x40; 3$EX_USAGE = 0x40; 4$EX_DATAERR = 0x41; 5$EX_NOINPUT = 0x42; 6$EX_NOUSER = 0x43; 7$EX_NOHOST = 0x44; 8$EX_UNAVAILABLE = 0x45; 9$EX_SOFTWARE = 0x46; 10$EX_OSERR = 0x47; 11$EX_OSFILE = 0x48; 12$EX_CANTCREAT = 0x49; 13$EX_IOERR = 0x4A; 14$EX_TEMPFAIL = 0x4B; 15$EX_PROTOCOL = 0x4C; 16$EX_NOPERM = 0x4D; 17