From: Thomas Secret Date: 2010-06-04T04:17:16+09:00 Subject: Re: redirecting stdin for 3. party program Thank you thank you thank you :-) Buffering by mawk simply wasn't something that crossed my mind at all. With your ruby line it walks flawlessly. For anyone interested: mawk needs the Option "-W interactive" do process input as it arrives... And I dumbly and persistently searched for the problem on the ruby side... Thanks again - solved! -- Posted via http://www.ruby-forum.com/.