du and ls

[Fabio Miranda Hamburger <fabmirha@xxxxxxxxxxxxxxxxxxxx>]

Hello,

I am curious about the mismatch between du and ls. Apparently, du reports 
amount of 512 or 1024-K blocks, and ls lists the absolute value.

But, why in some cases, a 1100 bytes file is reported by du as 4 x 512 
bytes instead of 3 x 512bytes

I note both use fstat().

Thanks for advice,

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Fabio Andrés Miranda
Ingeniería en sistemas informáticos
Universidad Latina - Costa Rica