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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>I work at a remote site, and I often use rsync to copy Unix application directories from the corporate site, to my own. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Often these directories are minor revisions of previous installations. (ie: /base/app/1.1, /base/app/1.2 /base/app/1.2.1 )<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I can make a copy of the previous directory under the new name, and then do a checksum transfer, but that may waste a lot of time, up front, in major version upgrades.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Is it possible in rsync to copy from source to destination, while checking a parallel directory for possible matching files, and thus doing a quick copy at the destination, rather than across the WAN?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The check could be done at the source, since the previous installation would be the same at both sites due to a previous rsync.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>