In your mail:
>From: Rainer Koehler <koehler_at_mpia-hd.mpg.de>
>Reply-To:
>To: liushidai_at_mails.tsinghua.edu.cn
>Subject: Re: FVWM: Re: [HELP]PipeRead Strange Error Message
>
> Doesn't this look like a line of ps-output to you? ;-)
>
That's why I found it weird.
> When you grep for something in ps-output, you usually also pick up the
> process of the grep itself (since it's argument is exactly what it's
> looking for). In this case, it picks up the sh-process created by
> fvwm.
>
> I know two ways to get around that:
> - grep for a regexp like '[F]vwm' (because it doesn't match itself)
> - or add a 'grep -v grep' to the command line
>
Thank you! `grep -v grep' solved the problem!
Now I know the best way to test out PipeRead command stream is:
% exec COMMAND
> BTW, I would follow Mikhael's advice and put all that into a separate
> shell-script. Life is much easier if reduce the number of quotes,
> backslashes etc. And a script is much easier to debug because you can
> just call it from a shell-prompt.
>
I agree.
--
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Received on Mon May 17 2004 - 03:42:55 BST