QNX RTOS v4 Knowledge Base
QNX RTOS v4 Knowledge Base
| Title |
From the shell how can I tell what the return value of the last executed program was? |
| Ref. No. |
QNX.000010028 |
| Category(ies) |
Utilities |
| Issue |
When a program exits, it has the option of returning an 'exit code' to the process which spawned it. In C code with would be done with: return(EXIT_CODE); OR exit(EXIT_CODE);
It is often useful to find out what exit code a program terminated with when running it from a shell prompt. |
| Solution |
'echo $?' will output this exit code. |
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