Can we connect and send commands in Putty

Selenium WebDriver is used for browser automation testing (hence the name WebDriver), so calling PuTTY, database, WinSCP are slightly out of scope for it.

Source: http://stackoverflow.com/questions/29484968/putty-automation-using-selenium-webdriver

Actually we can send commands in putty by using
commands

String command = "putty.exe -ssh root@******yourserver********.com -pw yourpassword -m stopPreAuth.txt";

Runtime rt = Runtime.getRuntime();
try {
rt.exec(command);
Thread.sleep(6000);
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}