Mail Archives: cygwin/2005/03/07/09:07:22
Three new Unison packages are now available in the Cygwin distribution:
unison2.9.1, unison2.9.20, and unison2.10.2. These packages replace the
older 'unison' package, which is now deprecated and has been moved into
the ZZZRemovedPackages category.
Unison is a file synchronizer for Unix and Windows. It allows two replicas
of a collection of files and directories to be stored on different hosts
(or different disks on the same host), modified separately, and then
brought up to date by propagating the changes in each replica to the
other.
The reason for separating Unison into three different packages is that
different versions of Unison will not talk to each other. For example, if
you are running Unison version 2.10.2 and attempt to synchronize with a
server running version 2.9.20, Unison will issue an error message about
incompatible versions and quit. By installing one or more of the packages
listed above, you can run whichever version you need in order to
synchronize with your server. Note, however, that every time you switch
to a different version of Unison for synchronizing the same set of files,
you will have to wait while Unison deletes and rebuilds its archive files.
You can safely install more than one of these packages; their executables
are named /usr/bin/unison-2.9.1.exe etc. In addition, the package
installer will create a symlink from /usr/bin/unison.exe to
/etc/alternatives/unison.exe, and from /etc/alternatives/unison.exe to one
of the installed /usr/bin/unison-*.exe files. You can reset this last
symlink, either manually or using update-alternatives(8), to point to
whichever version you want to use by default.
If you are using your Cygwin host as the Unison server, you can invoke
Unison on the client with '-servercmd /usr/bin/unison-$VERSION' to run the
version you want on the server, or put 'servercmd
/usr/bin/unison-$VERSION' into the client's preference file.
Please note that these unison* packages contain the CLI or text-mode
version of Unison. The GUI (GTK2) version will be packaged for Cygwin if
I can get it to work.
Home page: http://www.cis.upenn.edu/~bcpierce/unison/
License: GPL
Andrew E. Schulman
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