rsync is a powerful file and folder synchronisation tool in linux. To read more about rsync please go through this link:
http://www.zyxware.com/articles/2717/how-to-backupcopysynchronise-a-full-folder-lying-on-a-remote-server-onto-another-localremote-machine-easily-using-
Networking
As you have configured the apt-cacher-ng server, Now you have to change the directory where the packages will be downloaded. This is to ensure that you will provide a directory which has large space to store files or packages. To change the current directory to a new directory you have to the following steps.
To change the path you have to edit the following configuration file
Most web developers & system administrators have to do SSH logins to WHM based servers to make the necessary changes there. The default port used for ssh logins is port 22. However there might be unusual circumstances where port 22 is not the default port. In such a scenario we need to identify the default ssh-port used by the server. If you are facing a similar situation then read on to know how to find out the current port being used by SSH on a WHM based server.