Ramin Hossaini

Performing WordPress upgrades (Linux)

Oct
28

Note: Remember to always refer to the official upgrade guide. This is by no means official, but it has worked for me. I’ve tried to keep it as short and easy as possible.

Another Note: WordPress 2.7 comes out on November 10th. It will have an automatic updater module – so you probably won’t have to worry about this kind of thing again after that!

Versions tested with:

  • 2.6.3
  • 2.6.2
  • 2.6.1
  • 2.6.0

Obtain the path to your wordpress installation, we’ll assume it’s

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/home/user/www/blog

Safety first. Always.

So make a backup of your WordPress installation folder:

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cp -rp /home/user/www/blog /home/user/www/blog.backup

Next, you’ll want to make a backup of your MySQL database associated with it.

Refer to my Simple MySQL backup script to see how to do it.

You’re good to go now – you’ll be able to revert any changes you’ve made if you have to. (And that’s a nice fuzzy feeling)

Let’s get busy:

  • Make an update directory to copy new files from
  • Get latest WordPress zip file
  • Unzip
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mkdir /home/user/www/blog/update
cd /home/user/www/blog/update
wget http://wordpress.org/latest.zip
unzip latest.zip

Just to keep things clear, we have 2 directories at this point:

New files:

/home/user/www/blog/update/wordpress

Original files:

/home/user/www/blog

Delete your old wp-includes and wp-admin directories (I rename them here, which has the same effect).

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mv wp-includes wp-includes.old
mv wp-admin wp-admin.old
 
mkdir wp-includes
mkdir wp-admin

Copy over the new files (NOTE that I haven’t used the ‘-rp’ flag for the last copy command):

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cp -rp /home/user/www/blog/update/wordpress/wp-includes/* ./wp-includes/
cp -rp /home/user/www/blog/update/wordpress/wp-admin/* ./wp-admin/
 
cp -rp /home/user/www/blog/update/wordpress/wp-content/* ./wp-content/
cp /home/user/www/blog/update/wordpress/*.php ./

Log-in to your admin-page. If WordPress needs to perform a database upgrade, it will do it for you.

Check that all your plugins are enabled and in proper working condition.

Optional: After you’ve tested everything and you’re happy with the upgrade, you should delete all the extra files:

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rm -r /home/user/www/blog/wp-includes.old/
rm -r /home/user/www/blog/wp-admin.old/
rm -r /home/user/www/blog/update/
rm -r /home/user/www/blog.backup/

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