PmWiki is designed to make it easy to upgrade the PmWiki software without affecting your existing data files or installation. For most upgrades, you simply copy the files in the new release over your existing installation.

%block bgcolor=#f7f7f7 color=black border='1px solid black' padding=5px% Note for PmWiki 1.0 sites: Upgrading from 1.0.x to 2.0 requires more than simply copying the 2.0 software over the 1.0 installation. See Upgrading From PmWiki 1 for more details.

To upgrade PmWiki:

0. If you're upgrading to a new major release (a release where the second number changes, as in going from 0.5.27 to 0.6.0), then carefully read the PmWiki:ReleaseNotes before performing an upgrade to see if there are any significant changes or preparation tasks that must be handled before performing the upgrade. Upgrading from a beta version of 2.0 is quite easy, but taking a look at the 2.0 PmWiki:ReleaseNotes doesn't hurt.

1. It's always a good idea to have a backup copy of your existing PmWiki installation before starting. You can copy the entire directory containing your existing installation, or you can just make copies of the wiki.d/ directory and any other local customization files you may have created (e.g., config.php, localmap.txt, etc.).

2. Download the version of PmWiki that you want from http://www.pmichaud.com/pub/pmwiki.

3. Extract the tar image using tar -xvzf tgzfile, where tgzfile is the tar file you downloaded above. This will create a pmwiki-x.y.z directory with the new version of the software.

4. Copy the files in pmwiki-x.y.z over the files of your existing PmWiki installation. For example, if your existing PmWiki installation is in a directory called pmwiki, then one way to copy the new files over the existing ones is to enter the command:

->cp -a pmwiki-x.y.z/. pmwiki

Note that BSD systems will not not have the -a option as a command-line argument for cp, but that's okay, since it's just shorthand for cp -dpR, so use that instead of -a.

On (some) FreeBSD servers and Mac OS X systems you need to use

->cp -Rpv pmwiki-x.y.z/. pmwiki

5. That's it! As long as you didn't make any customizations to the pmwiki.php script or to the files in scripts/, your PmWiki installation should continue to run correctly! (Local customizations should go in local/config.php)

Note: Additional tips can be found on the Troubleshooting page.

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>>faq<<

Q: How can I test a new version of PmWiki on my wiki without changing the prior version used by visitors?
A: The easy way to do this is to install the new version in a separate
directory, and for the new version set (in local/config.php):

    $WikiLibDirs = array(&$WikiDir,
      new PageStore('/path/to/existing/wiki.d/{$FullName}'),
      new PageStore('wikilib.d/{$FullName}'));

This lets you test the new version using existing page content
without impacting the existing site or risking modification of
the pages. (Of course, any recipes or local customizations have to
be installed in the new version as well.)

Then, once you're comfortable that the new version seems to work
as well as the old, it's safe to upgrade the old version (and one
knows of any configuration or page changes that need to be made).