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Re^3: Backticks and SIGALRM

by nemo (Sexton)
on Aug 20, 2007 at 11:51 UTC ( #633779=note: print w/ replies, xml ) Need Help??

in reply to Re^2: Backticks and SIGALRM
in thread Backticks and SIGALRM

Can I pipe the output of the system command to my own program and read it in line by line. That way getting the best of both?

Comment on Re^3: Backticks and SIGALRM
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Re^4: Backticks and SIGALRM
by Anno (Deacon) on Aug 20, 2007 at 13:18 UTC
    Yes, you can pipe the output of the system command to [your] own program. In perldoc -f open, see the paragraphs following
    If the filename begins with '|' ...
Re^4: Backticks and SIGALRM
by sgt (Chaplain) on Aug 20, 2007 at 13:34 UTC

    as you are using qx() (which gets the full output anyway) maybe you can simply redirect the output of your external command to a file (using the system shell and process that later

    my $cmd = "$ext_cmd > $my_output"; # using unixlike shell system($cmd) == 0 or die; #

    (ignore if your OS is not unixlike) what does happen if you manually send SIGALRM to that external process? (wrap it in a shell if the execution time is too short).

    cheers --stephan

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