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Date: Tue, 06 Feb 2007 09:49:47 -0500
From: Mark Lord <lkml@rtr.ca>
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To: Oleg Verych <olecom@flower.upol.cz>
Cc: LKML <linux-kernel@vger.kernel.org>,
       Andrew Morton <akpm@linux-foundation.org>,
       Linus Torvalds <torvalds@linux-foundation.org>,
       Jesper Juhl <jesper.juhl@gmail.com>,
       Roman Zippel <zippel@linux-m68k.org>, Sam Ravnborg <sam@ravnborg.org>,
       William Stearns <wstearns@pobox.com>,
       Martin Schlemmer <azarah@nosferatu.za.org>
Subject: Re: [patch 1/3, resend] scripts: replace gawk, head, bc with shell,
 update
References: <20070206011819.160359000@flower.upol.cz> <20070206012207.805083000@flower.upol.cz>
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Oleg Verych wrote:
> scripts: replace gawk, head, bc with shell, update
> 
>   Replacing overhead of using some (external) programs
>   instead of good old `sh'.
...
> -    t4=`echo $t3 | gawk '{ print $1 }'`
> -    t5=`echo $t1 | gawk '{ print $1 }'`
> -    t6=`echo $t4 - $t5 | tr a-f A-F`
> -    t7=`( echo  ibase=16 ; echo $t6 ) | bc`
> +    t4=`field 1 $t3`
> +    t5=`field 1 $t1`
> +    t6=`printf "%lu" $((0x$t4 - 0x$t5))`
...

>>From where do we obtain this new "field" command ?

Cheers