title: Complete removal of apache2 under linux
body: <p>I have problem with removing apache2 under ubuntu. What I tried is:</p>
  
  <pre><code>sudo apt-get remove apache2
  sudo apt-get purge apache2
  </code></pre>
  
  <p>unfortunatelly after any of upper commands, there are still files:</p>
  
  <pre><code>sudo find / -name "apache2"
  /var/log/apache2
  /var/lib/update-rc.d/apache2
  /var/cache/apache2
  /usr/share/doc/apache2.2-common/examples/apache2
  /usr/share/apache2
  /usr/lib/apache2
  /usr/lib/apache2/mpm-event/apache2
  /usr/lib/apache2/mpm-itk/apache2
  /usr/lib/apache2/mpm-worker/apache2
  /usr/lib/apache2/mpm-prefork/apache2
  /usr/sbin/apache2
  /run/apache2
  /run/lock/apache2
  /etc/init.d/apache2
  /etc/apache2
  /etc/cron.daily/apache2
  /etc/default/apache2
  /etc/logrotate.d/apache2
  </code></pre>
  
  <p>When i run <code>sudo /etc/init.d/apache2 start</code></p>
  
  <pre><code> * Starting web server apache2                                                                                                                                                                            apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName
  (98)Address already in use: make_sock: could not bind to address 0.0.0.0:80
  no listening sockets available, shutting down
  Unable to open logs
  Action 'start' failed.
  The Apache error log may have more information.
  </code></pre>
  
  <p>After typing localhost in browser it responds with:</p>
  
  <pre><code>Forbidden
  
  You don't have permission to access / on this server.
  
  Additionally, a 403 Forbidden error was encountered while trying to use an ErrorDocument to handle the request.
  </code></pre>
  
  <p>Could this files disturb new apache server installation? I've checked them all but nothing interresting found.</p>
  
  <p><strong>EDIT:</strong>
  Upper output is after removal of the server. After removal of all files from <code>sudo find / -name "apache2"</code> I did install again <code>sudo apt-get install apache2</code>. <code>sudo /etc/init.d/apache2</code> outputs with:</p>
  
  <pre><code> * Starting web server apache2                                                                                                                                                                            Segmentation fault
  Action 'start' failed.
  The Apache error log may have more information.
  </code></pre>
  
  <p>But error.log and access.log are empty.</p>
  
  <p>Apache install:</p>
  
  <pre><code>sudo apt-get install apache2
  Reading package lists... Done
  Building dependency tree       
  Reading state information... Done
  The following extra packages will be installed:
    apache2-mpm-worker apache2-utils apache2.2-common
  Suggested packages:
    apache2-doc apache2-suexec apache2-suexec-custom
  The following NEW packages will be installed:
    apache2 apache2-mpm-worker apache2-utils apache2.2-common
  0 upgraded, 4 newly installed, 0 to remove and 0 not upgraded.
  Need to get 0 B/321 kB of archives.
  After this operation, 1,240 kB of additional disk space will be used.
  Do you want to continue [Y/n]? 
  </code></pre>
  
  <p>Is it normal that it asks only for <code>1,240 kB</code> space ?</p>