I use the command line quite a bit, so I always keep a Konsole window running. Since I frequently switch to the Konsole window, I thought it'd be much faster if I can bind a global shortcut key. Like with most things in Linux, the solution is only a Google search away :)
I had to install
I had to install
wmctrl first (sudo apt-get install wmctrl on Ubuntu). And then I bound the shortcut key Ctrl+Shift+K from my KDE's settings dialog to run the command wmctrl -x -a konsole.Konsole. -x says that I would be specifying windows using their WM_CLASS values; -a activates the window that follows it. To get the list of currently open window with their WM_CLASS values, I used the command wmctrl -xl.