Enabling mod_rewrite Module in Apache2

I came across this situation recently and thought of publishing it on my blog so others can find it useful.

Introduction: 

'mod_rewrite' is a module in Apache that provides a rule-based rewriting engine to rewrite requested URLs. You can read more about it at Apache Module mod_rewrite.

Enabling mod_rewrite:

To enable mod_rewrite, use the following command:

sudo a2enmod rewrite

Now restart Apache:

sudo service apache2 restart (or) sudo /etc/init.d/apache2 restart