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RE: cmd.exe bug in win2k sp4 in "for" loop
From: "Aditya, ALD [Aditya Lalit Deshmukh]" <aditya.deshmukh () online gateway technolabs net>
Date: Sat, 21 Aug 2004 17:56:27 +0530
thanks for the link that was what i *really* needed! -aditya -----Original Message----- From: full-disclosure-admin () lists netsys com [mailto:full-disclosure-admin () lists netsys com]On Behalf Of Maxime Ducharme Sent: Tuesday, August 17, 2004 08:25 PM To: ald2003 () users sourceforge net; Full-Disclosure@Lists. Netsys. Com Subject: Re: [Full-disclosure] cmd.exe bug in win2k sp4 in "for" loop Hi Aditya, this is not a bug, but normal operation of msdos command interpreter. There is a concept of different outputs for normal output and errors. They are called "stdout" and "stderr". stdout = 1 stderr = 2 When you redirect a program's output, you may specifiy which output you want (stdin or stderr). By default stdout is used, so a "1" is added before the redirections ">" or ">>". If you want to catch errors, you need to specify stderr output like this : echo "ello" 2>>stderr.log You may also catch each of them like this : echo "ello" 1>>stdout.log 2>>stderr.log You may find more details here : www.microsoft.com/windowsxp/home/using/productdoc/en/redirection.asp This is XP details, but I think it is the same behavior on NT, 2K and 2003. Have a nice day Maxime Ducharme Programmeur / Spécialiste en sécurité réseau ----- Original Message ----- From: Aditya, ALD [Aditya Lalit Deshmukh] To: Full-Disclosure@Lists. Netsys. Com Sent: Tuesday, August 17, 2004 1:31 AM Subject: [Full-disclosure] cmd.exe bug in win2k sp4 in "for" loop On windows 2000 SP4 the command processor cmd.exe has a small bug in the for loop see the attached image, this is making all the bat file go crazy with the output see the selected potions.... is this a known bug, with a patch ? can it be reproduced on other NT/2k/XP/3 versions of windows ? -aditya _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html ________________________________________________________________________ Delivered using the Free Personal Edition of Mailtraq (www.mailtraq.com) _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html
Current thread:
- cmd.exe bug in win2k sp4 in "for" loop Aditya, ALD [Aditya Lalit Deshmukh] (Aug 17)
- RE: cmd.exe bug in win2k sp4 in "for" loop Aditya, ALD [Aditya Lalit Deshmukh] (Aug 17)
- Re: cmd.exe bug in win2k sp4 in "for" loop bb (Aug 17)
- <Possible follow-ups>
- Re: cmd.exe bug in win2k sp4 in "for" loop Maxime Ducharme (Aug 17)
- Re: cmd.exe bug in win2k sp4 in "for" loop ... erratum Maxime Ducharme (Aug 17)
- RE: cmd.exe bug in win2k sp4 in "for" loop Aditya, ALD [Aditya Lalit Deshmukh] (Aug 21)