I installed nginx from source (make && make install) on my Ubuntu 10.04 server. Now I want to uninstall it and install it again from the PPA repo.
How to uninstall nginx compiled from source?
Uninstalling packages installed from source is not an easy task. You can try
If your concern is about installing it again from Ubuntu repositories, you can just install it without worrying much about previous installation. Then, you can verify which version you are using.