*update: It worked!!!
In a hurry to remove multiple old linux kernel versions from my system I popped in above command. After a while I came back to the terminal to find all my kernels were un-installed!!! :J
Well, thankfully I noticed what has happened and right away reinstalled the latest one with this command:
sudo apt-get install linux-image-3.13.0-62-generic.
Haven't rebooted yet. Let see!