The sys admin’s daily grind: Unison


Article from Issue 82/2007

Charly may be a traditionalist with sync-unfriendly duplicate home directories, but a little utility called Unison helps keep his data consistent . This month you’ll learn why Rsync sometimes isn’t enough.

I’m an old-fashioned kind of guy. You can tell by the way I still use a desktop computer, instead of entrusting my data to a laptop. The downside of this traditionalism is that I sometimes need to synchronize my home directories between my desktop and my laptop. Rsync is not a solution to this problem. The Rsync tool is a one-way street that updates a slave copy to reflect the master copy status. If I used Rsync consistently with the --delete parameter set, it would flatten any changes I had made on the slave machine in the meantime. The antidote to this problem is a tool called Unison.

Buy this article as PDF

Express-Checkout as PDF
Price $2.95
(incl. VAT)

Buy Linux Magazine

Get it on Google Play

US / Canada

Get it on Google Play

UK / Australia

Related content

  • Conduit and Unison

    Find out how the Conduit and Unison utilities can keep your documents and files in sync on multiple computers.

  • Shredder_9_Chess_Too..>

    Rsync lets you synchronize your data – on either a local or remote computer. You can even use Rsync with SSH to encrypt your data.

  • libferris

    With libferris, FUSE, and rsync, you can synchronize a filesystem with a dissimilar data source.

  • Unison Groupware Demo Now Available

    Unison is a groupware product first presented at Cebit 2008 that combines PBX telephony, a groupware server, instant messaging and directory services with its own Windows client. An online trial version is available for anyone interested in the product.

  • Unison as Free, Ad-Supported Version

    The commercial unified communication solution Unison is now available in a free, "sponsor-supported" version whose revenue comes from embedded advertising.

comments powered by Disqus

Direct Download

Read full article as PDF:

Charlys_Column.pdf  (96.34 kB)


njobs Europe
Njobs Netherlands Njobs Deutschland Njobs United Kingdom Njobs Italia Njobs France Njobs Espana Njobs Poland
Njobs Austria Njobs Denmark Njobs Belgium Njobs Czech Republic Njobs Mexico Njobs India Njobs Colombia