Reinstall Operating System in remote machine from Centos 5 to Ubuntu13.04
 

I do own a remote server (VPS).
It has Centos 5 installed and I want to change the Operating
system to Ubuntu13.04.
Currently I am able to access my VPS via ssh.
May I know how can I change my OS to Ubuntu13.04.
Command line method via terminal is preffered.

Your VPS provider should have options available to switch your distribution to whatever you want. For example, with Linode I know you can use one of several distros they have available or you can upload your own iso and install with that. Other than that, it would be very difficult if not possible to install another distribution.

@basica
Yes, you were right. I have successfully changed my OS to Ubuntu13.04
I have a url named VPS control panel. There all options are there for taking control of my server.
Options include shutdown, reboot, boot,etc

So, when not in use, what do you say I should shutdown my server? And then when I need it, I w'd enter this control panel and boot it. and then connect to the server via ssh,etc.
I hope you also do this way.

@basica
Have you ever reinstalled in remote machine after doing partitioning and giving space of your choice for root, boot, home, etc filesystem.
This way I install my local machine but remore one!!
Any go on how to partition before installing?

It is possible to remotely change an OS. It is not easy and one small mistake will wreck it.

Normally you simply contact the provider for the choice of OS. You may not have the full control over the system as you may believe. What is presented to you may have other issues for the server it is on.

Yes, you'r right. Yesterday, I realised that. There disk management commands aren't working. fdisk, parted, etc. don't work.