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    Don't read from stdout (&1). Try &0. Commented Jul 12, 2013 at 11:01
  • @ott yes indded that was the error in the script. &0 means stdin and &1 means stdout. thnak you for the comment. make it an answer and I will accept it Commented Jul 12, 2013 at 11:03
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    Why the redirect anyway? Just while read CMD; do should work. Commented Jul 12, 2013 at 11:12