From Free Software Directory
Jump to: navigation, search


Filesystem synchronization utility

SSYNC is a minimalistic filesystem synchronization utility. Its primary goals are reliability, correctness, and speed in syncing extremely large filesystems over fast, local network connections. SSYNC does not implement encryption, compression, differencing algorithms, or remote synchronization over a pipe such as rsh / ssh since those features are already well covered by other utilities such as rsync. It works well on large filesystems and can handle filesystem objects with unusual and non-ASCII characters in their names while correctly preserving all symbolic and hard links and all mode bits. It can be run at increased or decreased niceness and can provide several levels of logging output. Several options allow complete control of synchronization behaviors such as selectively disabling updating of data, ownership, and modes, as well as updating only newer objects or just performing 'test runs'.



Verified by

Verified on


Verified by

Janet Casey

Verified on

20 December 2001

Leaders and contributors

Michael W. Shaffer Maintainer

Resources and communication

AudienceResource typeURI
Ruby (Ref)

Software prerequisites


"Ruby (Ref)" is not in the list (General, Help, Bug Tracking, Support, Developer) of allowed values for the "Resource audience" property.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the page “GNU Free Documentation License”.

The copyright and license notices on this page only apply to the text on this page. Any software or copyright-licenses or other similar notices described in this text has its own copyright notice and license, which can usually be found in the distribution or license text itself.