redirection problem

grizzley has asked for the wisdom of the Perl Monks concerning the following question:

UPDATE: Problem solved by adding InheritConsoleHandles mentioned in this fix. Thank you all guys for hints and help!

What can be the reason, that script.pl > output.txt creates empty file output.txt and perl script.pl > output.txt creates output.txt with data produced by script.pl?

I have

This is perl 5, version 14, subversion 2 (v5.14.2) built for MSWin32-x
+64-multi-thread
(with 1 registered patch, see perl -V for more detail)

Copyright 1987-2011, Larry Wall

Binary build 1402 [295342] provided by ActiveState http://www.ActiveSt
+ate.com
Built Oct  7 2011 15:19:36
[download]

on Windows 7.

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Re: redirection problem by Corion (Patriarch) on Jun 22, 2012 at 09:56 UTC
I'm not sure whether the following threads have a solution for you, but the issue came up with Windows 7 and (64-bit) Perl / path extensions: Win7, ASSOCiation , and @ARGV - which claims to have a solution Re: Out of date over <> and 5.10 (redir)	[reply]
Re^2: redirection problem (unsolved) by tye (Sage) on Jun 22, 2012 at 17:53 UTC
Yes, it is unfortunate that the claim of finding the cause stands and that the follow-on discussion doesn't make it clear that that conclusion was in error. I would've made that point more forcefully but I was treading carefully, hoping to avoid an explosive denial and hoping to gently solicit a re-examination and thus a realization and admission. If you read the whole thread carefully, you can see that the conclusion is disproved and also what the real source for the conclusion (likely) was. So I consider this specific problem no better understood. Here's hoping that this round of investigation can come to a more useful conclusion. - tye	[reply]
Re: redirection problem by BrowserUk (Patriarch) on Jun 22, 2012 at 09:08 UTC
What output do you get from the following two commands? `C:\test>assoc .pl .pl=Perl C:\test>ftype Perl Perl="c:\perl64\bin\perl.exe" "%1" %*` [download] Note: The argument to the second command comes from whatever is after the '=' in the output from the first. With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday' Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". In the absence of evidence, opinion is indistinguishable from prejudice. The start of some sanity?	[reply] [d/l]
Re^2: redirection problem by grizzley (Chaplain) on Jun 22, 2012 at 09:26 UTC
Yes, I though it will be something with registry settings, but the output is exactly the same as yours.	[reply]
Re^3: redirection problem by BrowserUk (Patriarch) on Jun 22, 2012 at 09:32 UTC
the output is exactly the same as yours. Really? You are using a 64-bit perl? Are you sure the quoting of the arguments is exactly the same? How about: `C:\test>set pathext PATHEXT=.pl;.COM;.EXE;.BAT;.CMD;` [download] With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday' Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". In the absence of evidence, opinion is indistinguishable from prejudice. The start of some sanity?	[reply] [d/l]
Re^4: redirection problem by grizzley (Chaplain) on Jun 22, 2012 at 09:40 UTC
Re^5: redirection problem by BrowserUk (Patriarch) on Jun 22, 2012 at 13:27 UTC
Some notes below your chosen depth have not been shown here
Re: redirection problem by Happy-the-monk (Canon) on Jun 22, 2012 at 09:04 UTC
What can be the reason, that `script.pl > output.txt` creates empty file output.txt and `perl script.pl > output.txt` creates output.txt with data produced by script.pl? Does the execution of the first command produce any errors on STDERR (the cmd/dosbox/shell/terminal)? What does the first line of script.pl look like? What kind of a shell/terminal are you using? Cheers, Sören	[reply]
Re^2: redirection problem by grizzley (Chaplain) on Jun 22, 2012 at 09:29 UTC
No, there are no errors on STDERR: `C:\>type script.pl #!perl print 'abc' C:\>script.pl > noperl.txt C:\>perl script.pl > perl.txt C:\>type noperl.txt C:\>type perl.txt abc C:\>assoc .pl .pl=Perl C:\>ftype Perl Perl="C:\Perl64\bin\perl.exe" "%1" %*` [download] I use standard Windows console.	[reply] [d/l]
Re^3: redirection problem by Anonymous Monk on Jun 22, 2012 at 09:42 UTC
Do a `dir scrip*` Also try `#!/usr/bin/perl -- use strict; use warnings; use File::Find::Rule; use Env qw/ @PATH /; use Data::Dump; dd( find( 'file', 'name', qr/script/i, 'maxdepth', 1, 'in', \@PATH)); __END__` [download]	[reply] [d/l] [select]
Re^4: redirection problem by grizzley (Chaplain) on Jun 22, 2012 at 09:47 UTC
Re: redirection problem by pvaldes (Chaplain) on Jun 22, 2012 at 11:23 UTC
because script.pl is not a command recognizable to bash and returns false/null probably, so nothing is printed in the output file I use standard Windows console I missed this line, forget all said then	[reply]
Re^2: redirection problem by Anonymous Monk on Jun 22, 2012 at 11:28 UTC
Yeah, if you follow Corions links, you can examples of the error message win32 generates, like this `$ nonsense > NUL 'nonsense' is not recognized as an internal or external command, operable program or batch file.` [download]	[reply] [d/l]

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