title: pip not working
body: <p>I am trying to install python-shapely with pip in Ubuntu 10.04. I got "Unknown or unsupported command 'install'" while I tried,</p>
  
  <p><code>user@desktop:~$ pip install Shapely</code></p>
  
  <p>I tried installing pip and got the following error:</p>
  
  <pre><code>user@desktop:~$ sudo apt-get install python-pip
  Reading package lists... Done
  Building dependency tree
  Reading state information... Done
  The following NEW packages will be installed:
    python-pip
  0 upgraded, 1 newly installed, 0 to remove and 396 not upgraded.
  Need to get 0B/49.8kB of archives.
  After this operation, 270kB of additional disk space will be used.
  (Reading database ... 252574 files and directories currently installed.)
  Unpacking python-pip (from .../python-pip_0.3.1-1ubuntu2.1_all.deb) ...
  dpkg: error processing /var/cache/apt/archives/python-pip_0.3.1-1ubuntu2.1_all.deb (--unpack):
   trying to overwrite '/usr/bin/pip', which is also in package pip 0:0.13-1
  Errors were encountered while processing:
   /var/cache/apt/archives/python-pip_0.3.1-1ubuntu2.1_all.deb
  E: Sub-process /usr/bin/dpkg returned an error code (1)
  </code></pre>
  
  <p>I'd appreciate any comment/solution.</p>
  
  <p>Thanks!</p>