Hi,
I do not understand why this is necessary if the results from subdirectories
are not taken into account? Or asked the other way: What information from the
traversal process is taken into the total sum?
E.g. look at the following. du yields almost the same as "ls sums without dirs"
- although I cannot explain why these two do not match?!
somehost:/ # sum=0; for var in $(ls -l /etc/ | grep -v "^d" | awk '{print
$5}'); do sum=$(($sum + $var)); done; echo "erg: $sum"
erg: 2574839
somehost:/ # sum=0; for var in $(ls -l /etc/ | awk '{print $5}'); do
sum=$(($sum + $var)); done; echo "erg: $sum"
erg: 2902519
somehost:/ # du --separate-dirs --apparent-size --block-size=1 --summarize
/etc/
2583031 /etc/
Thanks and Regards,
Volker Badziong
-------- Original-Nachricht --------
> Datum: Thu, 29 May 2008 09:27:51 -0400
> Von: Bo Borgerson <[EMAIL PROTECTED]>
> An: Volker Badziong <[EMAIL PROTECTED]>
> CC: bug-coreutils@gnu.org, [EMAIL PROTECTED]
> Betreff: Re: du v5.93: traverses subdirectories although --separate-dirs and
> --summarize are set?
> Volker Badziong wrote:
> > Hello,
> >
> > I am running "du (GNU coreutils) 5.93". When executing e.g.
> >
> > du --separate-dirs --summarize /etc/
> >
> > you are only interested in the total space consumed by stuff in /etc/,
> not within any subfolders. But nevertheless du traverses all subdirectories,
> regardless if "--summarize" is set or not. This has no effect on the
> produced output / numeric result for /etc/.
> >
> > Is there a reason the traversal still happens? This causes a lot of (in
> my humble opinion) unncessary IO.
> >
> > Here is a sample output of running with and without --summarize. Numbers
> for /etc/ are identical, but IO happens in both cases the same.
> >
> > somehost:/ # du --separate-dirs --block-size=1 /etc/
> > 94208 /etc/udev/rules.d
> > ...
> > 3076096 /etc/
> >
> > somehost:/ # du --separate-dirs --block-size=1 --summarize /etc/
> > 3076096 /etc/
>
>
> I think du actually has to traverse the whole tree in both cases. The
> difference as I understand it with `--summarize' is that information is
> only _printed_ for the top level.
>
> Bo
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