# Upgrading from 3.1.x to 3.2.x

ht://Dig Copyright © 1995-2004 The ht://Dig Group
Please see the file COPYING for license information.

This guide is intended for those upgrading from 3.1.x or earlier versions to 3.2.x. The best advice is don't. That is, it is highly recommended that you install the 3.2 release in a separate directory tree and treat everything as if you were installing it for the first time. This is not just because this is a beta release. There are several main reasons for this:

- The htmerge program now only merges. You do not need to run it after running htdig as before. The "cleanup" duties have been moved to the htpurge program that also deletes URLs. The sample rundig script is modified accordingly.
- The default directory structure of this release is different from previous releases, more in line with other UNIX programs.
- The databases are all in different formats. This version cannot read databases from previous versions since the new formats have significantly more information and this cannot be reconstructed from old databases. This goes for fuzzy databases as well. Future versions can use the new htdump and htload programs to dump and load databases to/from text files. These will also allow databases to be transfered between platforms.

Text files, such as config files, result templates, etc. are the same between releases, so you will probably wish to copy these to your new installation.

Additionally, you may find things a bit rough at first. We appreciate your comments and suggestions, especially in the form of performance comparisons with the 3.1.x releases. Additionally, there are several things planned for the final 3.2.0 release that have not been implemented yet:

- Proximity (near) searching.
- Phrase searching method (in addition to and, or, and boolean).
- Field-based searching--restricting to a header, title, etc.
- Date-based searching--restricting to a range of dates.
- Implementation of a more accurate scoring system.
- Parallel indexing and searching.
- Support for https: and ftp: access

Please send comments, patches, etc. to the <htdig3-dev@htdig.org> mailing list.

Last modified: $Date: 2004/05/28 13:15:19 $