As you may know, HexChat is an IRC client. It is based on XChat, but works on both Windows and Linux / Unix. The latest version available is HexChat 2.9.6.
In this article I will show you how to install HexChat 2.9.6 on Ubuntu 13.10 Saucy Salamander, Ubuntu 13.04 Raring Ringtail, Ubuntu 12.10 Quantal Quetzal, Ubuntu 12.04 Precise Pangolin, Linux Mint 16 Petra, Linux Mint 15 Olivia, Linux Mint 14 Nadia, Linux Mint 13 Maya and Elementary OS 0.2 Luna.
Because it is available via PPA, installing HexChat 2.9.6 on Ubuntu, Linux Mint and Elementary OS is easy. All you have to do is add the ppa to the system, update the local repository index and install the hexchat package. Like this:
$ sudo add-apt-repository ppa:gwendal-lebihan-dev/hexchat-stable
$ sudo apt-get update
$ sudo apt-get install hexchat