From: Daniel Brumbaugh Keeney <devi.webmaster@...>
Date: 2008-03-06T05:55:22+09:00
Subject: Re: Better performance than native unix commands?

On Wed, Mar 5, 2008 at 2:32 PM, Rodrigo Bermejo
<rodrigo.bermejo@ps.ge.com> wrote:
> If you just need to list the name of the files, du is faster than ls
>  du -a  should make it.
>
>  -r.

First of all, that's using the wrong tool for the job. The job of ls
is to list files, du is for estimating file space usage. Second of
all, on my system at least, you're wrong about speed:

$ time ls -1>/dev/null
real    0m0.013s
user    0m0.004s
sys     0m0.008s
$ time du -a>/dev/null
real    0m0.080s
user    0m0.004s
sys     0m0.020s

the -1 on ls is to prevent formatting of the results

Daniel Brumbaugh Keeney