title: Error: can't create or remove files in install directory
body: <p>I'm trying to Setuptools as directed in Unix(wget) section in this page
  <a href="https://pypi.python.org/pypi/setuptools" rel="nofollow">https://pypi.python.org/pypi/setuptools</a></p>
  
  <p>But I'm getting the following error whenever I run this command</p>
  
  <pre><code>wget https://bitbucket.org/pypa/setuptools/raw/bootstrap/ez_setup.py -O - | python
  </code></pre>
  
  <p>Error message: </p>
  
  <pre><code>--2014-04-19 17:29:52--  https://bitbucket.org/pypa/setuptools/raw/bootstrap/ez_setup.py
  Resolving bitbucket.org (bitbucket.org)... 131.103.20.167, 131.103.20.168
  Connecting to bitbucket.org (bitbucket.org)|131.103.20.167|:443... connected.
  HTTP request sent, awaiting response... 200 OK
  Length: 10332 (10K) [text/plain]
  Saving to: `STDOUT'
  
  100%[======================================&gt;] 10,332      --.-K/s   in 0s      
  
  2014-04-19 17:29:53 (267 MB/s) - written to stdout [10332/10332]
  
  Extracting in /tmp/tmpDXrlBn
  Now working in /tmp/tmpDXrlBn/setuptools-3.4.4
  Installing Setuptools
  running install
  error: can't create or remove files in install directory
  
  The following error occurred while trying to add or remove files in the
  installation directory:
  
      [Errno 13] Permission denied: '/usr/local/lib/python2.7/dist-packages/test-easy-install-    19015.write-test'
  
  The installation directory you specified (via --install-dir, --prefix, or
  the distutils default setting) was:
  
  /usr/local/lib/python2.7/dist-packages/
  
  Perhaps your account does not have write access to this directory?  If the
  installation directory is a system-owned directory, you may need to sign in
  as the administrator or "root" account.  If you do not have administrative
  access to this machine, you may wish to choose a different installation
  directory, preferably one that is listed in your PYTHONPATH environment
  variable.
  
  For information on other options, you may wish to consult the
  documentation at:
  
     https://pythonhosted.org/setuptools/easy_install.html
  
  Please make the appropriate changes for your system and try again.
  </code></pre>
  
  <p>While browsing for the solution I found that 
      sudo easy_install 
  or changing the PYTHONPATH may work. I need a relatively detailed solution as I could get neither to work. Thanks in advance.</p>