I came across the unoconv linux utility for converting document formats. I found that unoconv produces different output everytime it is called with same input file.
bash$ unoconv -f doc test.html
bash$ md5sum test.doc
5895dee91a64699d04dfdb71c2be780b
bash$ rm test.doc
bash$ unoconv -f doc test.html
bash$ md5sum test.doc
33ec9298ef4c40c50cc4ade7bf1ab93a
How to overcome this behaviour?
