Install the archive signing key
wget -qO- http://coda.cs.cmu.edu/coda/jaharkes.key | apt-key add -
and the following to /etc/apt/sources.list.d/coda.list
deb http://coda.cs.cmu.edu/coda jessie main
Adjust jessie accordingly for the distribution you are running. We have repositories for Debian-stable (jessie), Ubuntu-14.04 and -16.04-LTS (trusty, xenial) and Ubuntu-15.10 (wily).
Install the Coda release RPM , which configures your system to receive software from the Coda repository. Then you can use yum install coda-client to install a Coda client.
Coda sources: https://github.com/cmusatyalab/coda
This depends on libreadline, libncurses5, liblua5.1, flex, bison, pkg-config, python, and automake/autoconf.