Update Submodules with Git
Git submodules seem to confuse people and I can probably count myself in that group of people that are confused. Their code is kind of part of the codebase, kind of isn't. Pulling the latest code from the overall project doesn't pull the updated submodule code, so sometimes you get errors and don't know what's going on. To ensure your submodules are always up to date, run this via the command line:
git submodule update --init --recursive
This command ensure your existing submodules are current as well as adds new submodule code whenever appropriate. I like to run this at least once a day just to make sure my code is always up to date. You never know what some of your collaborators have contributed (if you work in a team setting), so running this daily is useful!
![9 Mind-Blowing Canvas Demos]()
The <canvas> element has been a revelation for the visual experts among our ranks. Canvas provides the means for incredible and efficient animations with the added bonus of no Flash; these developers can flash their awesome JavaScript skills instead. Here are nine unbelievable canvas demos that...
![Creating Scrolling Parallax Effects with CSS]()
Introduction
For quite a long time now websites with the so called "parallax" effect have been really popular.
In case you have not heard of this effect, it basically includes different layers of images that are moving in different directions or with different speed. This leads to a...
![Upload Photos to Flickr with PHP]()
I have a bit of an obsession with uploading photos to different services thanks to Instagram. Instagram's iPhone app allows me to take photos and quickly filter them; once photo tinkering is complete, I can upload the photo to Instagram, Twitter, Facebook, and...
![Creating the Treehouse Frog Animation]()
Before we start, I want to say thank you to David for giving me this awesome opportunity to share this experience with you guys and say that I'm really flattered. I think that CSS animations are really great. When I first learned how CSS...
While this is definitely a useful command, it’s worth noting that updating your submodules basically just checks out the revision as defined in the repository. If you’re maintaining a project that uses submodules, this won’t get the latest code for that submodule, so much as it just ensures that the submodule is on the commit as defined.
For example, I maintain all of my dotfiles in a Git repository, which includes several submodules (Vim plugins, mostly). This command doesn’t actually update the submodules to the latest revision on their branch. If I want to go into each submodule and pull the latest code for each (which can be horribly risky, caveat emptor), I can do something like this:
git submodule foreach ‘git checkout master && git pull origin master’
That will go through each of my submodules, ensuring that they are on the latest master branch. That may not be the desired or best behavior, but it is something I learned about with regards to `git submodule update`.
Hi!
I’m very interested in git’s submodules but I can’t find a tutorial that I can understand properly
Could you address this? (or at least point me to your reference tutorial)
Thanks a lot!
Why not create a Git hook for this?
You could use post-checkout & post-merge to automatically fire this on every branch checkout or pull, respectively.