[cs631apue] why used blocks are always even in ls?

[Tejas Nadkarni]

You can test the system ls by setting the env for it. i.e. 'env
BLOCKSIZE=512 ls -l'

It will then use blocksize of 512 which is the default for our programs. I
used this to make sure my output matches the system ls for the same
blocksize.


On Mon, Oct 7, 2013 at 3:21 PM, hao wu <hwu9 at stevens.edu> wrote:

> I found out the reason, it because that my system physical block size
> actually  is 4096.
>
> 12987/4096 = 3.17  ==> 4
>
> and BLOCKSIZE not have to set as the same value as the physical block size
>
>
>
>
>
> On Mon, Oct 7, 2013 at 3:09 PM, hao wu <hwu9 at stevens.edu> wrote:
>
>> suppose I have a file abc, its  size is 12987,
>>
>> the environment BLOCKSIZE now is 2048.
>>
>> 12987/2048  = 6.34
>>
>> I think the blocks used should be 7.
>>
>> but in ls ,it shows 8
>>
>> I found that the blocks used are always even in ls, any ideas?
>>
>> Thanks,
>> Hao
>>
>>
>>
>
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