title: Parsing ICS file with bash
body: <p>This is a google calendar ics file.</p>
  
  <p>I download it each time to check whether new play events have been added or changed and I appear on IRC.</p>
  
  <p>I need convert a file like this :</p>
  
  <pre><code>BEGIN:VEVENT
  DTSTART:20160612T201000Z
  DTEND:20160612T211000Z
  DTSTAMP:20160519T200239Z
  UID:xxxxxxxxxxxxxxxxxx@google.com
  CREATED:20160518T153226Z
  DESCRIPTION:
  LAST-MODIFIED:20160518T153226Z
  LOCATION:OCS Choc
  SEQUENCE:0
  STATUS:CONFIRMED
  SUMMARY:Ash vs Evil Dead Saison 1 Episode 9 &amp; 10
  TRANSP:OPAQUE
  END:VEVENT
  BEGIN:VEVENT
  DTSTART;TZID=Europe/Brussels:20160611T203500
  DTEND;TZID=Europe/Brussels:20160611T233500
  DTSTAMP:20160519T202440Z
  UID:xxxxxxxx@google.com
  RECURRENCE-ID;TZID=Europe/Brussels:20160611T203500
  CREATED:20160503T144152Z
  DESCRIPTION:
  LAST-MODIFIED:20160518T123213Z
  LOCATION:RTS Un (Suisse)
  SEQUENCE:1
  STATUS:CONFIRMED
  SUMMARY:The Mysteries Of Laura Saison 2 Episode 1 à 4
  TRANSP:TRANSPARENT
  END:VEVENT
  </code></pre>
  
  <p>to</p>
  
  <pre><code>New Events Created :
  dim. juin 12  20:10  Ash vs Evil Dead Saison 1 Episode 9 &amp; 10 - OCS Choc
  
  Last Modified Event :
  sam. juin 11  20:35  The Mysteries Of Laura Saison 2 Episode 1 à 4 - RTS Un (Suisse)
  </code></pre>
  
  <p>I need convert with a bash script. 
  I have to get :</p>
  
  <p>DTSTART
  CREATED
  LAST-MODIFIED
  LOCATION
  SUMMARY</p>
  
  <p>And i need compare CREATED and LAST-MODIFIED</p>
  
  <p>pseudo-code :</p>
  
  <pre><code>if (created = LastModified)
  then 
       echo createdevent
  else
       echo lastModifiedEvent
  fi
  </code></pre>