We don't know what you did in either program of course. My first instinct would be to try 
./perlscript.pl > output.txt 2>&1

[download]
and see if the output magically appears in the file. If so then you can conclude that the output is going to STDERR instead of STDOUT as you expected.

Update: and if that doesn't do anything also try 0>&1 just to make sure and if that makes the difference you were writing to STDIN.

__________________________________________________________________________________

^M Free your mind!

In reply to Re: Inline: where did the output go? by Moron
in thread Inline: where did the output go? by andye

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