Rsync

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rsync is a program that syncronizes files between two sources. The two sources may be local files on a single computer or one source may be on a remote computer. When operating locally rsync communicates via filesystem calls. When operating between a local machine and a remote host, rsync communicates either via its own unencrypted protocol on port 873 or via an rsh/ssh tunnel.

The original implementation of rsync is a unix command line program that does not work on windows without cygwin.

Alternative and derivative projects

xdelta

http://xdelta.org/

A binary diff program based on the rsync algorithm.

DeltaCopy

http://www.aboutmyip.com/AboutMyXApp/DeltaCopy.jsp

A reimplementation of rsync in windows.

RsyncCE

http://www.rainer-keuchel.de/wince/rsync.html

PocketPC port. I will probably write more about this soon.

Unison

http://www.cis.upenn.edu/~bcpierce/unison/

A cross-platform, bi-direction replication tool. Features GUI or non-GUI operation.

Robocopy

Windows file/folder replication... now standard with Vista.

http://en.wikipedia.org/wiki/Robocopy

See Also