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This command sudo apt-get install update-manager-core is not working to upgrade Ubuntu 14.04 to 16.04.

I get this output:

Reading package lists... Done 
Building dependency tree
Reading state information... Done
update-manager-core is already the newest version.
The following packages were automatically installed and are no longer required:
 apache2.2-bin gdebi-core packagekit-backend-aptcc packagekit-tools python3-packagekit zlib1g-dev
Use 'apt-get autoremove' to remove them.
0 to upgrade, 0 to newly install, 0 to remove and 0 not to upgrade.
W: Duplicate sources.list entry http://ppa.launchpad.net/ondrej/php/ubuntu/trusty/main i386 Packages
(/var/lib/apt/lists/ppa.launchpad.net_ondrej_php_ubuntu_dists_trusty_main_binary-i386_Packages)
W: You may want to run apt-get update to correct these problems

The previous command was

sudo apt-get update && sudo apt-get dist-upgrade
Zanna
  • 70,465
West14
  • 23
  • otherwise, do you have steps to do this?, i was using the following: https://www.tecmint.com/upgrade-ubuntu-14-04-to-16-04/ – West14 Nov 15 '19 at 20:04
  • I would always stick to official or authorized documents rather than bloggers, for example - https://help.ubuntu.com/community/XenialUpgrades Yes if you trust and know the skillset of the blogger they can be easier (being less committee driven as some official things can be), however the duplicate entry error you get you would have got before & ignored. You must correct it one of the duplicate entries & try again (any sudo apt update should throw that warning for example). PPAs maker release-upgrading more difficult so are often safer to remove (purge) then return post-upgrade. – guiverc Nov 15 '19 at 21:12

0 Answers0