From: Tanaka Akira <akr@...>
Date: 2011-02-14T12:52:05+09:00
Subject: Re: System calls with ` in parameters

2011/2/10 Robert Klemme <shortcutter@googlemail.com>:

> Is there also a version which would return an IO or accept a block
> with IO parameter so we can feed something into the head of the
> pipeline and read from the tail?

% ruby -ropen3 -e '
Open3.pipeline_w(%w[head -6c], %w[cat -n]) {|w|
  w.write "ab\ncd\nef\n"
}'
     1  ab
     2  cd

% ruby -ropen3 -e '
Open3.pipeline_r(["echo", "foo`bar`baz"], ["head","-6c"]) {|r|
  p r.read
}'
"foo`ba"
-- 
Tanaka Akira