R. B. Riddick wrote: > Sounds like rsync can already do that (I am not sure right now, if rsync can > find updated areas within a large file, or if it just copies the while updated > file even if it is a large one)...
rsync will find an updated area within a big file. The algorithm is to divide any such file into 100kB[*] chunks, calculate checksums of each of those chunks and only transfer the chunks where the checksum differs between source and destination. More detail here: http://samba.org/rsync/how-rsync-works.html http://rsync.samba.org/tech_report/tech_report.html Cheers, Matthew [*] For some value of 100kB. -- Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard Flat 3 PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate Kent, CT11 9PW
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