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Re: Command substition failure?


From: Andreas Schwab
Subject: Re: Command substition failure?
Date: Sat, 02 Apr 2011 15:20:23 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.3 (gnu/linux)

Michael Witten <address@hidden> writes:

> Could somebody please tell me what's going on here?

Brace expansion.

$ set -x
$ echo "$(echo '"' | awk '{sub(/a/,$0)}')"
++ echo '"'
++ awk 'sub(/a/'
awk: cmd. line:1: sub(/a/
awk: cmd. line:1:        ^ unexpected newline or end of string
++ echo '"'
++ awk '$0)'
awk: $0)
awk:   ^ syntax error
+ echo '' ''
 

Andreas.

-- 
Andreas Schwab, address@hidden
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