Hello Linux Geeksters. As you may know, Trelby is an open source, multi-platform word processor for writting screenplays, available for Linux, Windows and Mac. The latest version available is Trelby 2.2, which has been recently released. For a full list of features, see the official site. 
In this article I will show you how to install Trelby 2.2 on Ubuntu, Linux Mint, Pear OS, Elementary OS, Debian, Kwheezy and Crunchbang.
There is no repository available, but we can download the deb package from the official site and install it with dpkg. Since it is multi-platform, it works for both 32 bit and 64 bit systems:
$ wget trelby.org/files/release/2.2/trelby_2.2_all.deb
$ sudo dpkg -i trelby_2.2_all.deb
$ sudo apt-get install -f
via lffl.org