From owner-freebsd-questions  Thu May 10 17:22:56 2001
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Date: Fri, 11 May 2001 01:23:47 +0100
To: Linh Pham <lplist@closedsrc.org>
Cc: freebsd-questions@FreeBSD.org
From: umarumohammed@hg15.btinternet.com <umarumohammed@btinternet.com>
Subject: Re: du - It Doesn't Add Up?
Reply-To: iumarumo@eidosnet.co.uk
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10/05/01 23:07:54, Linh Pham <lplist@closedsrc.org> wrote:

>On 2001-05-10, Drew Tomlinson scribbled:
<snip>
># 117 Blacksheep# du -hc /etc
<\snip>

Here you have specified a directory to perform du on - so the total (-c option) will be for the contents below this directory. du will recursively descend this directory and 
list all files within, and print their sizes in human readable format (-h option)...

<snip>
>#  97K    /etc/defaults
>#  32K    /etc/periodic/daily
>#  11K    /etc/periodic/weekly
># 3.0K    /etc/periodic/monthly
>#  47K    /etc/periodic
># 4.0K    /etc/ssh
># 9.0K    /etc/ssl
># 2.0K    /etc/gnats
>#  34K    /etc/isdn
># 1.0K    /etc/kerberosIV
># 148K    /etc/mail
>#  44K    /etc/mtree
># 10.0K   /etc/namedb
># 5.0K    /etc/ppp
># 1.0K    /etc/skel
>#  17K    /etc/uucp
>#  12M    /etc
>#  12M    total
>#
># If I add up the numbers, I only get a total of 462K, not 12M as indicated.
># What am I missing?
>
<\snip>
I think the -a option make du list files along with directories, here you only get a directory listing.

<snip>
>The `12M /etc' line means that /etc altogether is 12M (probably have a
>large file directly under /etc?)
>
<\snip>

No, etc is a directory, 12M is the size of the directory including all its contents.

Kindest regards,

	--ibs.




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