title: "sudo apt update" and all I get is (target content is configured multiple times), (the repository does not have a Release file), (404 not found)
body: <p>this is my first time to install linux on my system, I think there is a lot of mess here and I feel helpless from too many errors I got when trying to update my system, when use terminal with this command:</p>
  
  <pre><code>sudo apt update
  </code></pre>
  
  <p>I got many errors specially from these 3 types: </p>
  
  <ol>
  <li>(target content is configured multiple times) </li>
  <li>(the repository does not have a Release file)</li>
  <li>(Err 404 not found)</li>
  </ol>
  
  <p>knowing that I searched many topics and couldn't solve the problem with my system.</p>
  
  <p>Here's the output I got after writing "sudo apt update"</p>
  
  <pre><code>Ign:1 cdrom://Ubuntu 17.04 _Zesty Zapus_ - Release amd64 (20170412) zesty InRelease
  Err:2 cdrom://Ubuntu 17.04 _Zesty Zapus_ - Release amd64 (20170412) zesty Release
  Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
  Ign:3 http://download.videolan.org/pub/debian/stable  InRelease                
  Ign:4 http://deb.torproject.org/torproject.org artful InRelease                
  Ign:5 http://dl.google.com/linux/chrome/deb stable InRelease                   
  Hit:6 http://download.videolan.org/pub/debian/stable  Release                  
  Ign:7 http://eg.archive.ubuntu.com/ubuntu zesty InRelease                      
  Hit:8 http://archive.canonical.com/ubuntu artful InRelease                     
  Hit:9 https://repo.skype.com/deb stable InRelease                              
  Hit:10 http://dl.google.com/linux/chrome/deb stable Release                    
  Ign:11 http://security.ubuntu.com/ubuntu zesty-security InRelease              
  Hit:12 http://us.archive.ubuntu.com/ubuntu artful InRelease                    
  Ign:13 http://eg.archive.ubuntu.com/ubuntu zesty-updates InRelease             
  Hit:14 http://ppa.launchpad.net/atareao/atareao/ubuntu artful InRelease        
  Hit:15 http://repo.steampowered.com/steam precise InRelease                    
  Err:16 http://deb.torproject.org/torproject.org artful Release                 
    Connection failed [IP: 82.195.75.101 80]
  Ign:17 http://eg.archive.ubuntu.com/ubuntu zesty-backports InRelease           
  Err:18 http://security.ubuntu.com/ubuntu zesty-security Release                
    404  Not Found [IP: 91.189.91.26 80]
  Get:19 http://us.archive.ubuntu.com/ubuntu artful-updates InRelease [81.7 kB]  
  Hit:20 http://ppa.launchpad.net/atareao/telegram/ubuntu artful InRelease       
  Hit:21 https://deb.opera.com/opera-stable stable InRelease                     
  Err:22 http://eg.archive.ubuntu.com/ubuntu zesty Release                       
    404  Not Found [IP: 91.189.88.152 80]
  Hit:23 https://download.sublimetext.com apt/stable/ InRelease                  
  Err:24 http://eg.archive.ubuntu.com/ubuntu zesty-updates Release               
    404  Not Found [IP: 91.189.88.152 80]
  Hit:25 http://ppa.launchpad.net/atareao/telegram/ubuntu zesty InRelease        
  Err:26 http://eg.archive.ubuntu.com/ubuntu zesty-backports Release             
    404  Not Found [IP: 91.189.88.152 80]
  Hit:27 http://ppa.launchpad.net/dansmith/chirp-snapshots/ubuntu artful InRelease
  Get:28 http://us.archive.ubuntu.com/ubuntu artful-backports InRelease [72.2 kB]
  Hit:29 http://ppa.launchpad.net/diesch/testing/ubuntu artful InRelease         
  Hit:31 http://ppa.launchpad.net/eugenesan/ppa/ubuntu artful InRelease          
  Get:32 http://us.archive.ubuntu.com/ubuntu artful-security InRelease [78.6 kB] 
  Hit:33 http://ppa.launchpad.net/graphics-drivers/ppa/ubuntu artful InRelease   
  Hit:34 http://ppa.launchpad.net/i2p-maintainers/i2p/ubuntu artful InRelease   
  Hit:35 http://ppa.launchpad.net/libreoffice/ppa/ubuntu artful InRelease       
  Hit:36 http://ppa.launchpad.net/libreoffice/ppa/ubuntu zesty InRelease        
  Hit:37 http://ppa.launchpad.net/linuxgndu/sqlitebrowser/ubuntu artful InRelease
  Hit:38 http://ppa.launchpad.net/linuxgndu/sqlitebrowser-testing/ubuntu artful InRelease
  Hit:39 http://ppa.launchpad.net/noobslab/apps/ubuntu artful InRelease         
  Hit:40 http://ppa.launchpad.net/numix/ppa/ubuntu artful InRelease
  Hit:41 http://ppa.launchpad.net/otto-kesselgulasch/gimp/ubuntu artful InRelease
  Hit:42 http://ppa.launchpad.net/peterlevi/ppa/ubuntu artful InRelease         
  Hit:43 http://ppa.launchpad.net/pmjdebruijn/darktable-release/ubuntu artful InRelease
  Hit:44 http://ppa.launchpad.net/stebbins/handbrake-releases/ubuntu artful InRelease
  Hit:46 http://ppa.launchpad.net/stebbins/handbrake-releases/ubuntu zesty InRelease
  Hit:47 http://ppa.launchpad.net/team-xbmc/ppa/ubuntu artful InRelease         
  Hit:48 http://ppa.launchpad.net/team-xbmc/ppa/ubuntu zesty InRelease          
  Hit:49 http://ppa.launchpad.net/webupd8team/atom/ubuntu artful InRelease      
  Hit:50 http://ppa.launchpad.net/webupd8team/atom/ubuntu zesty InRelease
  Hit:51 http://ppa.launchpad.net/webupd8team/brackets/ubuntu artful InRelease
  Hit:52 http://ppa.launchpad.net/webupd8team/brackets/ubuntu zesty InRelease
  Hit:53 http://ppa.launchpad.net/webupd8team/java/ubuntu artful InRelease
  Hit:54 http://ppa.launchpad.net/webupd8team/java/ubuntu zesty InRelease
  Hit:55 http://ppa.launchpad.net/webupd8team/y-ppa-manager/ubuntu artful InRelease
  Reading package lists... Done                                                  
  E: The repository 'cdrom://Ubuntu 17.04 _Zesty Zapus_ - Release amd64 (20170412) zesty Release' does not have a Release file.
  N: Updating from such a repository can't be done securely, and is therefore disabled by default.
  N: See apt-secure(8) manpage for repository creation and user configuration details.
  E: The repository 'http://deb.torproject.org/torproject.org artful Release' does not have a Release file.
  N: Updating from such a repository can't be done securely, and is therefore disabled by default.
  N: See apt-secure(8) manpage for repository creation and user configuration details.
  E: The repository 'http://security.ubuntu.com/ubuntu zesty-security Release' does not have a Release file.
  N: Updating from such a repository can't be done securely, and is therefore disabled by default.
  N: See apt-secure(8) manpage for repository creation and user configuration details.
  E: The repository 'http://eg.archive.ubuntu.com/ubuntu zesty Release' does not have a Release file.
  N: Updating from such a repository can't be done securely, and is therefore disabled by default.
  N: See apt-secure(8) manpage for repository creation and user configuration details.
  E: The repository 'http://eg.archive.ubuntu.com/ubuntu zesty-updates Release' does not have a Release file.
  N: Updating from such a repository can't be done securely, and is therefore disabled by default.
  N: See apt-secure(8) manpage for repository creation and user configuration details.
  E: The repository 'http://eg.archive.ubuntu.com/ubuntu zesty-backports Release' does not have a Release file.
  N: Updating from such a repository can't be done securely, and is therefore disabled by default.
  N: See apt-secure(8) manpage for repository creation and user configuration details.
  W: Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list.d/google-chrome-stable.list:1 and /etc/apt/sources.list.d/google-chrome.list:3
  W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list.d/google-chrome-stable.list:1 and /etc/apt/sources.list.d/google-chrome.list:3
  W: Target Translations (main/i18n/Translation-en_US) is configured multiple times in /etc/apt/sources.list.d/google-chrome-stable.list:1 and /etc/apt/sources.list.d/google-chrome.list:3
  W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list.d/google-chrome-stable.list:1 and /etc/apt/sources.list.d/google-chrome.list:3
  W: Target DEP-11 (main/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list.d/google-chrome-stable.list:1 and /etc/apt/sources.list.d/google-chrome.list:3
  W: Target DEP-11 (main/dep11/Components-all.yml) is configured multiple times in /etc/apt/sources.list.d/google-chrome-stable.list:1 and /etc/apt/sources.list.d/google-chrome.list:3
  W: Target DEP-11-icons (main/dep11/icons-64x64.tar) is configured multiple times in /etc/apt/sources.list.d/google-chrome-stable.list:1 and /etc/apt/sources.list.d/google-chrome.list:3
  W: Target Contents-deb (main/Contents-amd64) is configured multiple times in /etc/apt/sources.list.d/google-chrome-stable.list:1 and /etc/apt/sources.list.d/google-chrome.list:3
  W: Target Contents-deb (main/Contents-all) is configured multiple times in /etc/apt/sources.list.d/google-chrome-stable.list:1 and /etc/apt/sources.list.d/google-chrome.list:3
  W: Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list.d/google-chrome-stable.list:1 and /etc/apt/sources.list.d/google-chrome.list:3
  W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list.d/google-chrome-stable.list:1 and /etc/apt/sources.list.d/google-chrome.list:3
  W: Target Translations (main/i18n/Translation-en_US) is configured multiple times in /etc/apt/sources.list.d/google-chrome-stable.list:1 and /etc/apt/sources.list.d/google-chrome.list:3
  W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list.d/google-chrome-stable.list:1 and /etc/apt/sources.list.d/google-chrome.list:3
  W: Target DEP-11 (main/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list.d/google-chrome-stable.list:1 and /etc/apt/sources.list.d/google-chrome.list:3
  W: Target DEP-11 (main/dep11/Components-all.yml) is configured multiple times in /etc/apt/sources.list.d/google-chrome-stable.list:1 and /etc/apt/sources.list.d/google-chrome.list:3
  W: Target DEP-11-icons (main/dep11/icons-64x64.tar) is configured multiple times in /etc/apt/sources.list.d/google-chrome-stable.list:1 and /etc/apt/sources.list.d/google-chrome.list:3
  W: Target Contents-deb (main/Contents-amd64) is configured multiple times in /etc/apt/sources.list.d/google-chrome-stable.list:1 and /etc/apt/sources.list.d/google-chrome.list:3
  W: Target Contents-deb (main/Contents-all) is configured multiple times in /etc/apt/sources.list.d/google-chrome-stable.list:1 and /etc/apt/sources.list.d/google-chrome.list:3
  </code></pre>