[PATCH 6/6] commands: implement 'diff' command

[Sascha Hauer]

On Wed, Oct 08, 2014 at 07:32:26PM +0400, Antony Pavlov wrote:
> On Wed,  8 Oct 2014 16:24:15 +0200
> Sascha Hauer <s.hauer at pengutronix.de> wrote:
> 
> > This command compares two files. It does not show the differences,
> > it only returns successfully if both files are identical and with
> > an error if they differ.
> 
> Here are my two comments:
> 
> 1. there is the 'cmp' command for simple comparing two files from Unix cmdline.
> Can we use 'cmp' name instead of 'diff'?

Yes, good idea. 'cmp' seems a better name. I changed it.

> 
> 2. we already can use 
>      memcmp -s FILE1 -d FILE2 0 0
>    for comparing files :)

I know. Admittedly I'm working on stuff where I need the diff_file (now
compare_file) C function. The cmp command is merely a vehicle to not
have the compare_file function unused in the tree until this work is
done ;)

Sascha

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