I have recently installed Lubuntu 18.10 (dual-boot with Windows 10) and I am unable to install Linuxdcpp on it. I have tried installing it using sudo apt-get install linuxdcpp command but it shows "Unable to locate package". Please help me install it.

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    Most likely universe repository is not enabled. – Pilot6 Mar 2 at 12:05

You need to add universe repository.


sudo add-apt-repository universe
sudo apt update
sudo apt install linuxdcpp

Ubuntu cosmic repositories don't contain linuxdcpp for some reason. You can try to search for a PPA if one exists.

  • shows " 'universe' distribution component is already enabled for all sources." – Priyaranjan Mudliar Mar 2 at 12:18
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    What is the Lubuntu version? – Pilot6 Mar 2 at 12:19
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    ubuntu 18.10 cosmic – Priyaranjan Mudliar Mar 2 at 12:54
  • There is no package for cosmic in Ubuntu repos. The latest is seen in bionic. – Pilot6 Mar 2 at 12:58

As of now linuxdcpp isn't imported in Cosmic's Universe repository. However you can install it by following ways.

  • You can download the .deb package from pkgs.org or Ubuntu Packages and install it using:

    sudo dpkg -i linuxdcpp_1.1.0-4_amd64.deb

    And finally install dependencies:

    sudo apt install -f
  • Or open sources.list with sudo privileges (sudo nano /etc/apt/sources.list) and add this line:

    deb http://archive.ubuntu.com/ubuntu bionic universe

    Update and install linuxdcpp:

    sudo apt update && sudo apt install linuxdcpp
  • Still showing this in terminal while installing it: E: The repository 'ppa.launchpad.net/linuxdcpp-team/ppa/ubuntu cosmic Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. – Priyaranjan Mudliar Mar 4 at 10:47
  • @PriyaranjanMudliar It looks like you have added some 3rd party repository. Remove that using sudo add-apt-repository --remove ppa:linuxdcpp-team/release – Kulfy Mar 4 at 11:03

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