I have been using putty to connect to one of my client server,here the problem is that copy and paste doesn't work. When I was on windows it used to work and now I want the same thing on ubuntu 13.10.
You might try adding a Shift to your commands, so Ctrl+Shift+C / V. That is how copy pasting is done in the terminal (Ctrl+C is used to abort terminal commands). Alternatively you can try pasting by pressing Enter or the middle mouse button.
In Ubuntu, you may wish to consider not using PuTTY at all: you can simply ssh using a terminal. For example, if you want to connect to test.server.com, you could simply type:
ssh test.server.com
If your username is different on the remote system, you can specify it by using this syntax:
ssh remote_username@remote_host
More advanced options are described in the man pages.
