From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <35d1a51a345858e759eea904502ce78e@vitanuova.com>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] rc - how to...
From: rog@vitanuova.com
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Date: Thu, 12 Sep 2002 15:42:38 +0100
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> du / | while(file=`{read})
> 	echo $file

it's probably worth mentioning that this is really quite slow, as the
read command is unable to do any IO buffering, must read one
character at a time, and is reloaded on every line of input:

on my machine,
	while (file=`{read}) {}

exececutes about 85 lines a second, whereas a simple xargs-like
program processes about 4300.

this could be quite significant if you're using to process
output from du (what was viable in the old bourne
shell with

	du . | while read x
	do something with $x
	done

is not necessarily fast enough in the rc equivalent)