[NTLUG:Discuss] Re: Is there a command line utility which will report directory statistics?

[Leroy Tennison]

Kenneth Loafman wrote:

> What the Evil Empire does is give you a summation of how much space 
> the files would occupy if they could be concatenated end to end.  The 
> du command gives you the actual amount of space the files occupy, 
> including cluster tips.  From an admin standpoint, that is much more 
> useful.
>
> ...Ken
>
>
> Kevin Brannen wrote:
>
>> Leroy Tennison wrote:
>>
>>> ...
>>> Second, I take it that 'du' reports only in blocks rather than 
>>> actual aggregates of sizes even if the '-b' switch is used, 
>>> correct?  The reason I ask is that I'm looking for an equivalent of 
>>> what the Evil Empire does when it calculates directory sizes.
>>
>>
>>
>> Not sure what you're asking here, but -b gives you the size in bytes 
>> (or changes the block size to 1 byte instead of the default 1K).  Try 
>> "du --help" and read closely.  If you prefer to learn by example, 
>> here's something for you:
>>
>> [13 ~ /home/kevin] ls -l SUSE-10.0-LiveDVD.iso
>> -rwx------  1 kevin users 1094363136 2006-01-17 20:57 
>> SUSE-10.0-LiveDVD.iso
>>
>> [14 ~ /home/kevin] du -b SUSE-10.0-LiveDVD.iso
>> 1094363136      SUSE-10.0-LiveDVD.iso
>>
>> [15 ~ /home/kevin] du -k SUSE-10.0-LiveDVD.iso
>> 1069760 SUSE-10.0-LiveDVD.iso
>>
>> [16 ~ /home/kevin] du -h SUSE-10.0-LiveDVD.iso
>> 1.1G    SUSE-10.0-LiveDVD.iso
>>
>> So you can see the actual size with the "ls -l" and that "du -b" 
>> gives the same answer (as would "wc -c").  The -k and -h switches to 
>> du just change their reporting format.  I used a file here to make 
>> the example easier, but you would get the same type of results with 
>> full dirs.
>>
>> HTH,
>> Kevin
>>
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>>
>
>
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I agree that, depending on what your goals are, the actual disk space 
taken may be far more important.  However, the situation that prompted 
my question was one where I was wondering if I had ftp'ed all the source 
files to the destination.  A simple byte-count comparison would have 
given me a Yes or No answer.  Admittedly 'wc -l' is another wayt to 
accomplish the same thing in this situation.