During the past week, I think I had to update all my wordpress instances twice, and it’s become really annoying doing this manually. I’ve written a python script which I’ll share with you.
How I keep my wordpress updated by hand
I tend to keep my wp-content folder outside of my wordpress installation for 2 reasons:
1. I don’t like to loose my themes, plugins and customizations
2. I like to keep all my customization changes under subversion
So, if I had my wordpress installation say at:
/home/user/public_html/blog
I’d keep my wp-content folder for that here:
/home/user/public_html/wp-content-for-blog
So when I upgrade my blog, I always remove the original wp-content folder that comes along wordpress, and I symlink my hard worked on wp-content folder that lives outside to the freshly unzipped wordpress folder.
[bash]
user@machine:~/public_html/blog$ ls -l
…
lrwxrwxr-x 1 user www 54 2008-11-26 09:29 wp-content -> /home/user/public_html/wp-content-for-blog
…
[/bash]
So what I endup doing all the time, is downloading the latest.zip to ~/public_html/, it will unzip under ~/public_html/wordpress, and then I’ll copy the current ~/public_html/blog/wp-config.php to ~/public_html/wordpress, then I’ll remove the default ~/public_html/wordpress/wp-content and symlink the outer wp-content with all my customizations, themes and plugins to it. Once done, I’ll make a backup of the old wordpress folder, and then I’ll rename wordpress folder to the name of the blog folder, and it’s all done.
It’s simple, but when you have to do it for 5 blogs, every week, it’s not fun anymore.
The Update Script
So here’s a script to do it in one step. If you’re not using my symlinked technique, this will do it for you, you only need to specify the full path to the folder where you want to keep your current wp-content folder outside the new installation before you apply the update, and the name of the folder where your current blog lives. The script below will have its configuration variables towards the beginning set so that they are in line with the example I’ve been talking about.
[python]
#!/usr/bin/python
#########################################################################################
#
# upgrade_wordpress.py – Script to automatically upgrade your wordpress installation.
#
# Requirements:
# – Python 2.4 or older
# – WordPress should already be installed
# – CURL (sudo apt-get install curl)
#
# Author: Angel (Gubatron) Leon
# LICENSE: See the GPL2 license.
# 2008
#########################################################################################
import os
#########################################################################################
#Config (relative to the folder where this script will be run from)
#########################################################################################
#The current folder where the blog lives
BLOG_FOLDER=’blog’
#
# The first time you run the script, it will try to make a copy of your
# current wp-content folder outside. Copy here the location of where
# the wp-content folder with your themes and plugins should exist.
#
# After it unzips, it will remove the default wp-content folder from
# the new installation, and it will symlink the external wp-content
# That way you don’t ever have to worry about loosing your customizations
# and plugins.
#
WP_CONTENT_OUTSIDE_COPY_FOLDER="/home/user/public_html/wp-content-for-blog"
#This is where a backup of your current blog will be
BLOG_FOLDER_BACKUP_FOLDER=BLOG_FOLDER+’.old’
#Where to download the wordpress latest.zip from
WORDPRESS_LATEST_ZIP_URL=’http://wordpress.org/latest.zip’
#### DO NOT MODIFY AFTER THESE LINES ####
def downloadWordpress(url=WORDPRESS_LATEST_ZIP_URL):
if os.path.exists(‘latest.zip’):
print "Removing old latest.zip"
os.remove(‘latest.zip’)
#Try to download with CURL
print "Attempting to download latest.zip from wordpress.org"
os.system(‘curl %s -o latest.zip’ % url)
if not os.path.exists(‘latest.zip’):
os.system(‘wget ‘ + url)
return os.path.exists(‘latest.zip’)
def dirExists(dirName):
return os.path.exists(dirName) and os.path.isdir(dirName)
def backupBlog(currentBlogFolder=BLOG_FOLDER,
wpContentOriginalFolder=WP_CONTENT_OUTSIDE_COPY_FOLDER,
backupFolder=BLOG_FOLDER_BACKUP_FOLDER):
#Remove any previous backups
if os.path.exists(backupFolder) and os.path.isdir(backupFolder):
print "Removing previous backup folder"
os.system(‘rm -fr ‘ + backupFolder)
#Copy the current blog folder into a backup folder just in case.
#We won’t do any database backups for now.
print "Creating new backup folder"
os.system(‘cp -r %s %s’ % (currentBlogFolder,backupFolder))
#Check for the copy of wp-content outside the blog, if it doesn’t exist
#we’ll make it for the first time.
if not dirExists(wpContentOriginalFolder):
print "Creating outside copy of wp-content"
os.system(‘cp -r %s %s’ % (os.path.join(currentBlogFolder,’wp-content’),
wpContentOriginalFolder))
#Copy the latest wp-config.php outside to the current folder
print "Copying your latest wp-config.php outside"
os.system(‘cp %s .’ % (os.path.join(currentBlogFolder,’wp-config.php’)))
backupFolderExists = dirExists(backupFolder)
wpContentFolderExists = dirExists(wpContentOriginalFolder)
configFileExists = os.path.exists(‘wp-config.php’)
return backupFolderExists and wpContentOriginalFolder and configFileExists
def upgradeBlog(currentBlogFolder=BLOG_FOLDER,
backupFolder=BLOG_FOLDER_BACKUP_FOLDER,
url=WORDPRESS_LATEST_ZIP_URL,
wpContentOriginalFolder=WP_CONTENT_OUTSIDE_COPY_FOLDER):
if not downloadWordpress(url):
print "Could not download latest.zip, aborting."
return False
if not backupBlog(currentBlogFolder,wpContentOriginalFolder,backupFolder):
print "Could not backup blog or wp-config.ph, aborting."
return False
if currentBlogFolder == ‘wordpress’:
print "The current blog folder cannot be ‘wordpress, aborting."
return False
#1. If a wordpress/ folder exists, wipe it.
if dirExists(‘wordpress’):
print "Removing old wordpress folder"
os.system(‘rm -fr wordpress’)
if dirExists(‘%s.delete’ % currentBlogFolder):
print "Removing old %s.delete folder" % currentBlogFolder
os.system(‘rm -fr %s.delete folder’ % currentBlogFolder)
#2. Unzip new copy
os.system(‘unzip latest.zip’)
if not dirExists(‘wordpress’):
print "Could not unzip the wordpress installation, aborting."
return False
#1. Copy wp-config.php into the new installation
os.system(‘cp wp-config.php wordpress/’)
#2. Remove the default wp-content folder
os.system(‘rm -fr wordpress/wp-content’)
#3. Symlink the original wp-content that lives outside
os.system(‘ln -s %s wordpress/wp-content’ % (wpContentOriginalFolder))
#4. Verify symlink was created
if not (os.path.exists(‘wordpress/wp-content’) and os.path.islink(‘wordpress/wp-content’)):
print "Could not create symlink to wp-content, aborting."
return False
#5. Move original folder to folder.delete, and make this wordpress folder the current folder.
os.system(‘mv %s %s.delete’ % (currentBlogFolder,currentBlogFolder))
if not dirExists(currentBlogFolder + ".delete"):
print "Could not rename current folder for later deletion, aborting."
return False
#6. Rename the new installation as the current blog
os.system(‘mv %s %s’ % (‘wordpress’,currentBlogFolder))
if dirExists(‘wordpress’):
print "ALERT: The wordpress folder still exists."
return False
if not dirExists(currentBlogFolder):
print "ALERT: The blog doesn’t exist, recover from the backup folder %s please" % (backupFolder)
return False
#7 Cleanup
os.system(‘rm -fr %s.delete’ % (currentBlogFolder))
return True
if __name__ == ‘__main__’:
upgradeBlog()
[/python]
Requirements
Installation
Usage:
[bash]python upgrade_wordpress.py[/bash]
The script is very fault proof, it will always try to abort in case something is not going the way it’s expected. At the end of the day it’ll also leave a backup copy of your current blog in case something goes bad, you can always recover.