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On Sat, Sep 11, 2004 at 04:40:36PM -0400, Jeff Abrahamson wrote: > On Sat, Sep 11, 2004 at 04:20:17PM -0400, Alexander Birch wrote: --CUT-- > But part of the context you trimmed showed that the byte change was > from 0xF5 to 0x95. (I didn't verify but took the original poster's > word for it.) That means a high bit was lost, but other high bits > were not lost. The file was long enough that a single bit error is > not so easily explained. (Recall that only *one* bit in the whole > file changed.) > > Here's that diff output from the original message: > > > 0063060 ea55 29fd f004 83c0 3fb2 f93a 899e f529 > > 0063060 ea55 29fd f004 83c0 3fb2 f93a 899e 9529 > > I wonder if that bit error checksums the same. It would be > interesting to check the checksumming routines in whatever file > transfer program was used to see if the two files look identical to > it. Such things are possible with very (very) low probability. > > > You then said: > > This is yet another reason not to use windows. > > ...or another reason not to use linux. Or just to avoid anything > that's different. ;-) > > -- > Jeff Jeff: Excellent idea. I ran cksum and md5sum and both are unique for each file. The files were originally part of a tar.gz file. The problem is that they extracted fine back in '99 or '00 when I unpacked them. They just "aged" poorly. # cksum Now-Is-Calling-1.entropy.jpg 1438987976 29147 Now-Is-Calling-1.entropy.jpg # cksum Now-Is-Calling-1.original.jpg 1435228423 29147 Now-Is-Calling-1.original.jpg # md5sum Now-Is-Calling-1.entropy.jpg 9d30ba34b124a19e7f3bf880e7c08b74 Now-Is-Calling-1.entropy.jpg # md5sum Now-Is-Calling-1.original.jpg 35ed7cd5dac4b73d2cc9fe6f05aa5193 Now-Is-Calling-1.original.jpg Eric -- # Eric Lucas # "Oh, I have slipped the surly bond of earth # And danced the skies on laughter-silvered wings... # -- John Gillespie Magee Jr. ___________________________________________________________________________ Philadelphia Linux Users Group -- http://www.phillylinux.org Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug