linux-kernel - Re: [PATCH 3/3] perf, tool: Add new event group management

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Message-ID: <1332321311.18960.474.camel@twins>
Date:	Wed, 21 Mar 2012 10:15:11 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	Jiri Olsa <jolsa@...hat.com>, acme@...hat.com, mingo@...e.hu,
	paulus@...ba.org, cjashfor@...ux.vnet.ibm.com, fweisbec@...il.com,
	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 3/3] perf, tool: Add new event group management

On Tue, 2012-03-20 at 21:46 +0100, Ingo Molnar wrote:
> * Peter Zijlstra <a.p.zijlstra@...llo.nl> wrote:
> 
> > Now the disadvantage is that {} needs quotes on bash, [...]
> 
> Not on my version of Bash:
> 
>  earth5:~> perf stat {}
>  {}: No such file or directory
>  Terminated
>  earth5:~> perf stat true {}
> 
>   Performance counter stats for 'true {}':
> 
> it's passed in literally, AFAICS.

# echo {}
{}
# echo {en,dis}able
enable disable


It somehow special cases {}, which is horrible.
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