From: Luis Lavena <luislavena@...>
Date: 2010-11-23T21:40:22+09:00
Subject: Re: system() or process.create?

On Nov 23, 12:08 am, Fengfeng Li <lifengf...@huawei.com> wrote:
> Hi everyone,
>
> I'm a beginer of ruby, I want to know how to call external applications
> in ruby, without the cmd window poping up.
> I leanrt this link:http://www.ruby-forum.com/topic/213521#new, and
> tried all the below ways:
> result = `#{cmd}` #I tried this but the window still poped up
> result = IO.popen("#{cmd}").read   #and the same with this one
> Process.create(
>   :app_name => cmd,
>   :startup_info=>  {:sw_flags=>Process::SW_HIDE , :startf_flags =>
> Process::STARTF_USESHOWWINDOW}                    )
> #at last, I use process.create and the black window disappeared.
>
> It worked good when I set cmd as "\"#{winrar_path}\\winrar.exe\" e -y
> -o+ -ibck \"#{para[:dst_path]}\\*.zip\" \"#{para[:dst_path]}\\\"", but
> when I changed it to "del *.zip", it always said "CreateProcess()
> failed: ", as below:
>

WinRAR will pop up a Windows during extraction.

You need a command line version tool like 7-zip (7za) that works in
the command line and can be hidden or look in WinRAR documentation
about silent command line extraction arguments.

--
Luis Lavena