http://bugs.winehq.org/show_bug.cgi?id=23596
--- Comment #11 from Eric Pouech eric.pouech@orange.fr 2011-11-26 13:17:35 CST --- or issue in#9 (and in reply to #10), likely a similar case of bug #28192 (even it does apply here to a different kind of executable) for the remaining part of #9 (/bin/grep without parameter) it's a bug in cmd, I'll send a patch shortly however, please not that this behavior will only work with bare consoles (eg wine cmd...) but won't work with wineconsole (as we don't know yet to redirect a unix pipe to wineconsole). That should be a separate bug report A+