Install Telegram Desktop in Ubuntu

gistfile1.txt

Download the telegram Desktop client here https://desktop.telegram.org/
Go to the client location in terminal and extract the package with < tar xf archive.tar.xz >
Now you have a folder called < Telegram >
Move this folder to /opt
Double-click the telegram binary in /opt/Telegram/Telegram.
Bonus: to add Telegram to de "applications" menu, right-click the icon of the runing app and choose "lock to launcher"

bon appetit

sources:
http://askubuntu.com/questions/556532/how-to-install-telegram-desktop-in-ubuntu-14-04-lts