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One of the big benefits of using WordPress Multisite as opposed to several different individual WordPress installations is the fact that you get to update your files one time. And no matter what, once you click update, it propagates throughout the entire network. Now that can be good and it can be bad, depending on if the update is stable or not. But let's assume that the update is stable and that you're doing a good thing. Updating in one place for like 20 sites? That's amazing! It used to take me hours to go through and update individual sites over and over and over again. It was so tedious.
Now that I'm rolling everything into Multisite, it makes it so much easier for me to just go in, click a button, and I'm done. In this movie I will show you how to update your WordPress Multi site network. You'll be amazed that how easy it is. As you can see on this screen here, it's telling me that I've already updated my main installation of WordPress. And I have updated my installation of WordPress. I'm running the current beta version of WordPress 3.3. However, I have not updated every single site of my network. And it's telling me here, Thank you for Updating! Please visit the Update Network page to update all of your sites.
Any time there's an update available inside of WordPress, it will tell you in one of these yellow boxes here. If you want to update this stuff, just click on Update Network. Once you get to this section, you'll notice that it tells me I can update all of the sites on my network through this one page. It explains a little bit of how it does it to. It says it works by calling the update script for each site automatically. So basically what you would be doing by going to each site and hitting the update button one by one, WordPress does that for you. Pretty neat! If there are any other available updates, you can see them over here on the left underneath the Available Updates screen.
To update your network, just click Update Network. As you can see, it goes through and updated all four of my sites. You saw it do it in succession, and then it tells me, All done! Now the yellow update marker goes away and everything is up-to-date. If I go to my Available Updates, you'll notice here that it says WordPress Updates. It tells me the time that it last checked. I can check again and if any new updates have come through, it will show me that here. Since I have the BackupBuddy plug-in currently running on my site, it tells me here to remember to back up everything before upgrading WordPress.
And that's a good rule of thumb. Any time you're getting ready to do an update, create yourself a backup. It also tells me here that an updated version of WordPress is available. It's telling me this simply because I am running the beta version of WordPress 3.3 and they have downloadable nightly builds of the software. Nightly builds aren't exactly as stable as point releases or standardized beta releases. So I don't necessarily recommend unless you're a developer or you seriously know what you are doing. However, if you wanted to update, you could click Update Now and it would go through and update everything inside of your WordPress install.
If you have any plug-ins or themes that need to be updated and the author has tied into that hook to let WordPress know that the theme needs to be updated, it will automatically show those updates here and you can update those network wide as well. So easy. So the next time you log in to your WordPress Multisite Dashboard, take a look and see if you have any yellow warnings indicating that there's an update available for WordPress or simply visit the Updates section on the left-hand side of the navigation. Once you get in here, check it out, see if there's anything that needs to be updated and if so, you can apply it network-wide in just seconds.
It's that easy and it's going to save you a ton of time.
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