Once upon a time, Rick Stevens <ricks@xxxxxxxx> said:
> On 03/25/2010 10:44 AM, Patrick O'Callaghan wrote:
> > On Thu, 2010-03-25 at 10:21 -0700, Rick Stevens wrote:
> >> # find /etc -size 1G -exec ls -lh \{\} \;
> >>
> >> run as root finds files<1G as confirmed by the "ls" bit of the
> >> command.
> >
> > The OP's test (and mine) was with "-size -1G". Your test uses "-size 1G"
> > but (incorrectly) gives the result expected for "-size -1G".
> >
> > This really should be reported. It would be appropriate for the OP to do
> > so as he found it.
>
> You are correct. Doing "-size -1G" on both F11 and F12 return only
> zero-length files. Yep, that's a bug in my book.
Looking at the source, it is happening because of the way the size
suffix is implemented. With no suffix, find works in increments of a
blocksize of 512 (the file size in bytes is rounded up to the next
integer multiple of the blocksize); "find -size 1" would find all files
with a size from 1 to 512 bytes, inclusive, and "find -size -1" would
find files with a size less than 1 (e.g. 0).
GNU find implements the suffixes by changing the blocksize. So, 1G is
interpreted as size from 1 to 1024*1024*1024 bytes. -1G means smaller
than that, so still only size 0 matches.
While this gives less-than-intuitive results, this is the documented
behavior (although the documentation could be clearer).
--
Chris Adams <cmadams@xxxxxxxxxx>
Systems and Network Administrator - HiWAAY Internet Services
I don't speak for anybody but myself - that's enough trouble.
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