Suppose you are downloading/uploading a file using ftp, and for some
reason the result is corrupted. (This happened for me recently when the
reget of lftp didn't seem to work properly --- see my other email) If the
file is huge, then to do it all again would take ages and be a big waste.
I can envisage a piece of software that did the following:
Look at the file on either end and imagine that it comprises a sequence
of smaller sized chunks. Use "md5sum" or some similar checksum to compare
chunks and see for which chunks the files actually differ. Then do an ftp
transfer, only for those chucks where there is a problem.
For files where the problem is only at a small number of points, this
would be a dramatic saving of time and resources. My question is, does
such software, or something similar, exist?
Thanks,
Mark.
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"They told me I was gullible ... and I believed them!"
