If you are not yet using source control for your projects you ought to. Subversion is by far my favorite one. Below you will find easy to follow instructions on how to add your project to a subversion source repository.
Create a folder called temp, browse into temp and create your rails application. You will also create tags, branches and trunk folders:
mkdir temp cd temp mkdir trunk mkdir tags mkdir branches cd trunk rails my_app
Now you have to exclude a couple of files from the repository like the files inside tmp/ and log/ as well as the database.yml file.
rm -r log/* rm -r tmp/* mv config/database.yml config/database_example.yml
Your local app is ready to be imported into your subversion repository. Browse to your temp folder and run the import command.
svn import . http://path/to/your/repos/my_app -m "Initial Import"
You have successfully created a subversion repository on the server, now you need to checkout a copy onto you local computer so that you can start working with it.
svn co http://path/to/your/repos/my_app/trunk
You must create a config/database.yml and that is easily accomplished by making a copy of config/database_example.yml. You will also need to tell subversion to ignore that file as well as any new files inside tmp/ and log/.
cp config/database_example.yml config/database.yml svn propset svn:ignore database.yml config/ svn propset svn:ignore "*" tmp/ svn propset svn:ignore "*" log/
Almost done. All that’s left to do is to commit the above changes.
svn ci -m "Ignoring files."
You are done, just remember that you must add new files to your repository when you create them on your local machine using:
svn add filename.ext svn ci filename.ext -m "Committing new file."
For more advanced techniques using subversion make sure to check out the free online Subversion Book.