title: Can't connect to github
body: <p>I have been following This Tutorial.</p>
  
  <p>However When it comes to doing <code>ssh git@github.com</code> I am getting </p>
  
  <blockquote>
    <p>PTY allocation request failed on channel 0</p>
  </blockquote>
  
  <p>If I do 
  <code>ssh git@github.com -v</code> I get </p>
  
  <pre><code>OpenSSH_5.8p1 Debian-1ubuntu3, OpenSSL 0.9.8o 01 Jun 2010
  debug1: Reading configuration data /etc/ssh/ssh_config
  debug1: Applying options for *
  debug1: Connecting to github.com [207.97.227.239] port 22.
  debug1: Connection established.
  debug1: identity file /home/hailwood/.ssh/id_rsa type 1
  debug1: Checking blacklist file /usr/share/ssh/blacklist.RSA-2048
  debug1: Checking blacklist file /etc/ssh/blacklist.RSA-2048
  debug1: identity file /home/hailwood/.ssh/id_rsa-cert type -1
  debug1: identity file /home/hailwood/.ssh/id_dsa type -1
  debug1: identity file /home/hailwood/.ssh/id_dsa-cert type -1
  debug1: identity file /home/hailwood/.ssh/id_ecdsa type -1
  debug1: identity file /home/hailwood/.ssh/id_ecdsa-cert type -1
  debug1: Remote protocol version 2.0, remote software version OpenSSH_5.1p1 Debian-5github2
  debug1: match: OpenSSH_5.1p1 Debian-5github2 pat OpenSSH*
  debug1: Enabling compatibility mode for protocol 2.0
  debug1: Local version string SSH-2.0-OpenSSH_5.8p1 Debian-1ubuntu3
  debug1: SSH2_MSG_KEXINIT sent
  debug1: SSH2_MSG_KEXINIT received
  debug1: kex: server-&gt;client aes128-ctr hmac-md5 none
  debug1: kex: client-&gt;server aes128-ctr hmac-md5 none
  debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024&lt;1024&lt;8192) sent
  debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
  debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
  debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
  debug1: Server host key: RSA 16:27:ac:a5:76:28:2d:36:63:1b:56:4d:eb:df:a6:48
  debug1: Host 'github.com' is known and matches the RSA host key.
  debug1: Found key in /home/hailwood/.ssh/known_hosts:1
  debug1: ssh_rsa_verify: signature correct
  debug1: SSH2_MSG_NEWKEYS sent
  debug1: expecting SSH2_MSG_NEWKEYS
  debug1: SSH2_MSG_NEWKEYS received
  debug1: Roaming not allowed by server
  debug1: SSH2_MSG_SERVICE_REQUEST sent
  debug1: SSH2_MSG_SERVICE_ACCEPT received
  debug1: Authentications that can continue: publickey
  debug1: Next authentication method: publickey
  debug1: Offering RSA public key: /home/hailwood/.ssh/id_rsa
  debug1: Remote: Forced command: gerve hailwood
  debug1: Remote: Port forwarding disabled.
  debug1: Remote: X11 forwarding disabled.
  debug1: Remote: Agent forwarding disabled.
  debug1: Remote: Pty allocation disabled.
  debug1: Server accepts key: pkalg ssh-rsa blen 279
  debug1: Remote: Forced command: gerve hailwood
  debug1: Remote: Port forwarding disabled.
  debug1: Remote: X11 forwarding disabled.
  debug1: Remote: Agent forwarding disabled.
  debug1: Remote: Pty allocation disabled.
  debug1: Authentication succeeded (publickey).
  Authenticated to github.com ([207.97.227.239]:22).
  debug1: channel 0: new [client-session]
  debug1: Requesting no-more-sessions@openssh.com
  debug1: Entering interactive session.
  debug1: Sending environment.
  debug1: Sending env LANG = en_NZ.UTF-8
  PTY allocation request failed on channel 0
  </code></pre>
  
  <p>What am I doing wrong?</p>