Upgrading Mediawiki

   ssh [email protected]
   cd /srv/http/wiki.pumpingstationone.org
   curl http://releases.wikimedia.org/mediawiki/1.23/mediawiki-1.23.1.tar.gz | sudo tar -xvzf 
   cd mediawiki-1.23.1
   sudo ln -sf ../LocalSettings.php ./
   cd ..
   sudo unlink mediawiki
   sudo ln -sf mediawiki-1.23.1 mediawiki
   sudo touch LocalSettings.php
   cd mediawiki
   php maintenance/update.php
   sudo systemctl restart php-fpm
   

Go to https://wiki.pumpingstaitonone.org and make sure everything looks ok.