Re: get return value from jar file

check perlvar and you will get this

$CHILD_ERROR
    $?      The status returned by the last pipe close, backtick (``)
            command, successful call to "wait()" or "waitpid()", or fr
+om the
            "system()" operator. This is just the 16-bit status word
            returned by the traditional Unix "wait()" system call (or 
+else
            is made up to look like it). Thus, the exit value of the
            subprocess is really ("$? >> 8"), and "$? & 127" gives whi
+ch
            signal, if any, the process died from, and "$? & 128" repo
+rts
            whether there was a core dump.
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update:

sorry, misunderstanding the question

you have got the return value of the backtick command. just as CountZero posted.

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Re^2: get return value from jar file by CountZero (Bishop) on Dec 05, 2011 at 13:27 UTC
And how does your answer enlighten the OP? Did he ask for the error status of the command? CountZero A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James	[reply]
Re^3: get return value from jar file by vinian (Beadle) on Dec 05, 2011 at 13:49 UTC
thanks for your reminding, i misunderstanded the question, and have update the answer.	[reply]