To rename a remote you can use the command git remote rename in the terminal, from the root folder of your repository.
To add a new remote you need to use the git remote add command on the terminal in the root folder of your repository.
How to create Java Custom Annotation. A simple example of creating Annotations in Java and usage by calling the Reflection API.
How to change hostname in Ubuntu. There are three options: temporary until the first restart and permanent by changing the hostname file or using command hostnamectl