In this article, I will explain the steps you have to take to push a Cloud9 IDE project to a source code hosting site like Bitbucket. For this article, I'm assuming that you have created a git project in Cloud9. Let's see how you can push this project to Bitbucket.

First, if you haven't done so already, create a Bitbucket account. Then, follow these steps:

1. Go to your Cloud9 dashboard. Click on Your Account  and, under Account Settings, click on Show your SSH key and copy the key..
2. In Bitbucket, go to Account Settings and then click on SSH Keys (https://bitbucket.org/account/#ssh-keys). Paste the Cloud9 SSH key into the textbox. Then, click "Add key".
3. Create a git repository on Bitbucket. At the top, you will see: "Clone this repository (size: ... bytes): HTTPS/SSH". Click on SSH. Then, underneath it will show a URL of the form git@bitbucket.org:username/reponame.git. Copy this URL.
4. Go to your Cloud9 project. If you created it as a git project, git is already setup. If you haven't already, commit any changes using the console:
• git add .
• git commit -a -m "My first commit"
5. Then, add a new remote repository from the Cloud9 console:
• git remote add origin <git url you copied>
• For instance:
• git remote add origin git@bitbucket.org:username/repository_name.git
6. Then, you can push to this repository:
• git push origin master

Your project is now pushed to bitbucket.