in reply to redirecting STDOUT (of a system call) to a var

i've been alltogether unsatisfied with this situation myself, as seen in a past post of mine~
once again: program output and return code. though in my environment, i was able to change code to use IPC::Open3, and capture STDOUT and STDERR.

what i cannot do is capture STDOUT, STDERR, and the exit code. hopefully at some point in the future, this will be remedied.

ACK!!!

~Particle

  • Comment on Re: redirecting STDOUT (of a system call) to a var

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(tye)Re: redirecting STDOUT (of a system call) to a var
by tye (Sage) on Jun 28, 2001 at 19:27 UTC

    Doesn't calling waitpid() (as documented) after using open2() or open3() also give you the exit status?

            - tye (but my friends call me "Tye")
[reply]

      BRILLIANT!

      now i call waitpid(-1,0), and the value of $? is the return value from the open! this will make my programming life MUCH easier!

      thank you tye.

      in case this helps anyone else, the code that's changed is: 

      eval { 
    $pid = open3("<&STDIN", \*OUTPUT, \*OUTERR, 'perl return.pl') ;
    $val = waitpid(-1,0); # <--- added this line
};

...

print "---pid$n";     print $pid . $n;  # <--- prints pid
print "---val$n";     print $val . $n;  # <--- prints pid
print "---\$?$n";     print $? >>8, $n; # <--- prints exit val

      [download]
      i am amazed. and VERY happy.

      ~Particle

[reply]
[d/l]

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