Originally Posted by elico
Putty is ssh/telnet client and terminal emulator that can be used with a embed system. If your embed does have the port available and services are started then you can communicate via a shell.
As to debug, most embed system do have toolkits to support interactive debugging. Sure you could use the Putty terminal on a MS Windows or Gnu/Linux based system to have interactive control as long as the embed supports such actions.
FYI: I suggest that you look at 'How to Ask Questions the Smart Way' so in the future your queries provide information that will aid us in diagnosis of the problem or query.
I also suggest that you might consider posting question(s) concerning embeds & Linux in Linux - Embedded
to get targeted response.