1k = 1000

[szabgab]

I don't see any explanation what values can I use for size, but it seems 1k means 1000 which was not obvious to me. (I thought it would be 1024)

It's documented this way:

All of the stat elements have a method that takes a single argument in a form understood by Number::Compare.

Maybe I need to give some examples or explain it the way Number::Compare does:

The target value may use magnitudes of kilobytes (k, ki), megabytes (m, mi), or gigabytes (g, gi). Those suffixed with an i use the appropriate 2**n version in accordance with the IEC standard: http://physics.nist.gov/cuu/Units/binary.html

[szabgab]

Oh I did not notice that part in the documentation. (I was looking for a section called "Size rules".) Thanks for the links.