[GRASSLIST:3836] Re: Export DEM?

[Russell Nelson]

Daniel Victoria writes:
 > a 2.0 Gb file 

Be careful!  Some unices cannot write to a file larger than 2.147E9
bytes because of file system 32-bit restrictions.  Files that large
may be truncated by a program which does not check to see if its
writes fail.  Writes fail so infrequently that you never know if a
program checks without auditing its entire source code.  I haven't
done that to any part of grass, so please don't take this as an
indictment of GRASS.  Even if GRASS was perfectly clean, it uses
files with a documented format that can be manipulated by other tools, 
and those tools may have a write problem.

Just be careful when you're working with files that large to make sure 
that your data doesn't get truncated.

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