(patch) more information on errors

[Carles Pina i Estany]

Hello,

I am a Powertop user, and there is a couple of things that I'm missing.

First of all: sometimes Powertop tries to write to some file (like
/proc/sys/vm/dirty_writeback_centisecs, first one in my laptop) even
being a user. And if Powertop cannot writes there (permission problem,
etc.) user is not warned, so user gets confused -suggestion is done
again, etc.

I send a patch that handles it. It's very stupid patch, but somebody has
to do the stupid things :-) . Please, feel free to comment anything
about it (what to change, etc.). I will happily do it.

If this patch is welcomed, I worked a bit (but I need to finish it) on
patch that shows the stderr of system commands. Powertop calls to some
programs and usually doesn't check the return value.

Thanks!

-- 
Carles Pina i Estany		GPG id: 0x8CBDAE64
	http://pinux.info	Manresa - Barcelona
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