Install Indian fonts

India is a country rich with regional languages. You can install regional language fonts in Ubuntu. Apply following command in a terminal,

sudo apt-get update
sudo apt-get install fonts-indic

This font package include Malayalam, Hindi, Tamil, Kannada etc.

Install Malayalam Fonts alone
Apply following command to install only Malayalam Fonts.

sudo apt-get install fonts-mlym

Beautiful Malayalam fonts available at Swathantra Malayalam Computing website.

Image courtesy: IIT Madras