How to install Mercurial under Ubuntu

sudo add-apt-repository ppa:mercurial-ppa/releases
sudo aptitude update
sudo aptitude install mercurial

If you're keen on Tortoise:

sudo add-apt-repository ppa:tortoisehg-ppa/releases
sudo apt-get update
sudo apt-get install tortoisehg-nautilus
nautilus -q

Create or edit file:
for Windows

D:\promauto-src\RoboPlant\RPlant2\Projects\.hgrc 

for linux

~/.hgrc 

[ui]
username = Denis Lobanov <ldvasu@mail.ru>