From: "Rémi Cools" Date: 2010-07-22T18:37:50+09:00 Subject: Re: How to avoid black-windows using system() ? Hi Clifford Heath & Roger Pack, thanks for you answers. I don't understand wath you say, perhaps I didn't explain my problem correctly. I want to avoid that system() call cmd.exe in : system( [cmd, cmd], "-background", "#000000", "-geometry", "100%%" cmd is a String : cmd = "d:\\mes documents\\___3D\\imageMagick\\montage.exe" not the cmd.exe shell I thought that when you call system() with only one parameter, cmd.exe is used but when you call system() with more than one parameter, the program is directly launched without cmd.exe Can you confirm that ? thanks & regards. -- Posted via http://www.ruby-forum.com/.