rsync se da pouzit i lokalne, ale defaultne nedela "rozdily", ale kopiruje cele soubory.
citace z manu:
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-W, --whole-file
With this option the incremental rsync algorithm is not used and the whole file is sent as-is instead. The transfer may be faster if this option is used when the bandwidth between the source and destination machines is higher than the band‐width to disk (especially when the “disk” is actually a networked filesystem). This is the default when both the source and destination are specified as local paths.
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