Mercurial:
sudo add-apt-repository ppa:mercurial-ppa/releases
sudo apt-get update
sudo apt-get install mercurial
hg --version
TortoiseHg:
sudo add-apt-repository ppa:tortoisehg-ppa/releases
sudo apt-get update
sudo apt-get install tortoisehg-nautilus
sudo add-apt-repository ppa:mercurial-ppa/releases
sudo apt-get update
sudo apt-get install mercurial
hg --version
TortoiseHg:
sudo add-apt-repository ppa:tortoisehg-ppa/releases
sudo apt-get update
sudo apt-get install tortoisehg-nautilus