title: unable to install redis 2.7+ on ubuntu 12.04
body: <p>I am new to <code>redis</code>. and I just followed <code>cli</code> to install redis <code>sudo apt-get install redis</code>.
   but the install server version is <code>2.2.12</code> . If I want to update this version and I want to install <code>redis 2.7 +</code> then how can I do this thing, please help. I am working on <code>ubuntu 12.04</code></p>