Manual:Uninstallation

Removing MediaWiki entirely can be accomplished in two steps: removing the directory where MediaWiki was installed, and dropping the MediaWiki database from MySQL or Postgres.

Deleting the wiki files
To uninstall the wiki itself, simply delete the directory containing the wiki's files. For example, if you installed MediaWiki to /var/www/mediawiki-xyz, you might do

rm -rf /var/www/mediawiki-xyz

MySQL
To remove the MySQL database holding your wiki, use the mysql utility to interactively connect to MySQL as a user with adequate permissions, then issue the following command at the mysql> prompt:

DROP DATABASE wikidb;

Alternatively, you can use a DB administrative tool, such as PHPMyAdmin, to perform the same action.

Postgres
To remove the Postgres database holding your wiki, run the following command:

dropdb wikidb

or connect to the database as a user with the correct permissions and issue:

DROP DATABASE wikidb;