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Re: bash: request for a way to return variables to the parent of a subsh


From: Richard Neill
Subject: Re: bash: request for a way to return variables to the parent of a subshell
Date: Wed, 23 Jul 2008 05:32:06 +0100
User-agent: Thunderbird 2.0.0.14 (X11/20080629)

Thank you. That's a really neat solution - and it would never have occurred to me. I always think from left to right!

Richard



Paul Jarc wrote:
Richard Neill <address@hidden> wrote:
the aim is to parse the output of "ffmpeg -formats" to see whether
certain codecs are supported by that build.

I'd use something like:
while read line; do
  ...
done < <(ffmpeg -formats 2>/dev/null)

That puts ffmpeg into a subshell instead of read.


paul





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