Ruby system exit status constants -

the ruby kernel#exit takes status code argument. code corresponds exit(3) c function call, c libraries provide predefined constants. using constants more readable using literal integers. macos exit(3) man page says:

the c standard (iso/iec 9899:1999 (``iso c99'')) defines values 0, exit_success, , exit_failure possible values of status.  cooperating processes may use other values; in program might called mail transfer agent, values described in sysexits(3) may used provide more information parent process. 

does ruby provide constants correspond status codes such exit_success quoted above? preferably in language itself, standard library or if nothing else ruby gem.

as stated in documentation kernel#exit:

true , false of status means success , failure respectively.

more specifically:

• exit(true) (or exit) corresponds exit_success
• exit(false) corresponds exit_failure

the underlying c code:

switch (status) {   case qtrue:     istatus = exit_success;     break;   case qfalse:     istatus = exit_failure;     break;   // ... } 

other values system dependent , therefore don't have constant in c standard.