To change the Main Menu link menu entry in Joomla, from Joomla administ rator I tried to:
Menus -> Main Menu -> Menus
I've changed the title but the change didn't appeared in my Joomla based website .
I tried to change it directly in the source code of the website by looking for 'Main Menu' string with:
debian:/home/mysite/www# grep -rli 'Main Menu' *
but it appeared too complicated and after trying few string changes in few files I decided to drop this kind of approach.
A bit of investigation online led me to how to achieve what I was trying to dire ctly from Joomla.
Here is how. In Joomla administrator move to:
Extensions -> Module Manager
In the list you will the Module Manager appear under the list Module Name , therein you have to click over Main Menu text and change it to whatever you like to.
The new text you entered will appear on the joomla website immediately, enjoy.