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ZipSnap 2.1
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File Size: 96.7 Kb

ZipSnap 2.1

Publisher:Zach Scrivena
Platform:Vista, Windows, Linux, MAC, Mobile
Requirements:Java Runtime Environment (JRE 6+)
Install:No Install Support
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Publisher's Description:

ZipSnap - Ever wished there was an easy way to backup multiple versions of your files, or quickly synchronize them across different computers (even on different operating systems) so that you always work with the most recent copies? ZipSnap can help you with that!

ZipSnap creates archives that are collections of point-in-time snapshots. An archive is just a directory of catalogs (plain text files compressed as ZIP files) and compressed volumes (ZIP files). When a snapshot is added to an archive, a new compressed volume is created, containing only new or modified files and directories. A catalog is used to store information on the snapshots and contents of the archive. Files are automatically numbered with a timestamp. Runs on any OS with the Java Runtime Environment (JRE 6+). ZipSnap is free and open source software written in Java and released under the GNU GPL license (version 3).


* ZipSnap creates archives that are collections of point-in-time snapshots. An archive is just a directory of catalogs (plain text files compressed as ZIP files) and compressed volumes (ZIP files).

* Catalogs are written cumulatively, i.e. a later catalog contains all the information from previous catalogs. Therefore, only the latest catalog is needed when adding/restoring snapshots.

* Catalogs and compressed volumes are automatically timestamped as ArchiveName.yyyyMMdd-HHmmss.n, with extensions and .zip respectively, where n is the snapshot number.

* Because ZipSnap never modifies a catalog or compressed volume after it is created, archives can be stored on write-once-only media.

* ZipSnap supports GLOB and REGEX filters for file/directory names, or their full (relative) pathnames.

See for the latest version, screenshots, documentation, and other information.

List of Changes:

Version 2.1 from 2007-08-26


Simple command-line incremental backup tool.

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File Size: 96.7 Kb

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Latest User Reviews:

Keith 2008-12-02 23:57:51 #
Version: 2.1

First impressions

I am considering all options for protecting myself from two situations: 1. Total loss of hard drive media at an awkward moment 2. Destroying my previously good spreadsheets (self inflicted). This tool appears to give me access to 'layers' of changes (snapshots) to which I can pull 'good' copies of any previous version or all of the latest versions of files that I included in an ARCHIVE. However I would appreciate many more examples of the use of each of the various switches and more examples of different approaches for setting up batch files for specific purposes. I did set my trial '.bat' file up so that it sent all output to a '.txt' file that could be reviewed later using Wordpad and this helped show me how things were working.

I envision being in a subdirectory and when I am done with the various speadsheets or text files in that directory I would launch the '.bat' file (via icon and mouse) found in that directory and a 'snapshot' of the new or changed files in that directory (and all its subdirectories) would be saved to the ARCHIVE on a seconds hard drive. The command line is not the way for me to go. The '.bat' files via an icon is my preferred solution.

I read the provided information several times and had many questions. I eventually realized that the process was similar to incremental backups of specific subdirectories (on demand) and that detection of changed files was performed by checking parameters other than the 'archive flag'. This gave me a little better insight. However the switch '-l' for 'list' is still unclear at this point since I saw no example of its use.

From time to time I will make an 'image' of my working hard drive and once that image is considered 'good' I will begin a completely new ARCHIVE and leave the previous ARCHIVES available in case I needed to obtain an earlier version of a file that was archived before the disk image was made. So the ARCHIVES would allow me to treat ZipSnap as a 'versioning' tool.

So my biggest suggestion is to make many more examples and explain WHY they are of value (what they actually DO). I was impressed with the information generated (the report I capture) during the process as it was clear what had been done or not done (NICE REPORTING JOB).

As always, it is just as important for people to adjust their operating habits so that tools such as ZipSnap can be most valuable. Such things as keeping ALL documents and ALL spreadsheets under a common directory allows ZipSnap to work on all documents made to date during each snapshot. Having them scattered all over the hard drive makes any backup process difficult (not fool proof).

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File Size: 96.7 Kb