the --rsyncable option for gzip is not mentioned in the gzip manpage, though it does appear to be enabled in the gzip program itself.<br />
<br />
This is what's in the gzip manpage on Debian:<br />
<br />
--rsyncable<br />
While compressing, synchronize the output occasionally based on the<br />
input. This increases size by less than 1 percent most cases, but means<br />
that the rsync(1) program can much more efficiently synchronize files<br />
compressed with this flag. gunzip cannot tell the difference between a<br />
compressed file created with this option, and one created without it.
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