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guys. i wanted to install virtualbox on my Ubuntu 18.04 lts,but when i run sudo apt update,i get this : E: Malformed entry 53 in list file /etc/apt/sources.list (Component) E: The list of sources could not be read.

Here is that list:

# deb cdrom:[Ubuntu 18.04 LTS _Bionic Beaver_ - Release amd64 (20180426)]/ bionic main restricted

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://lt.archive.ubuntu.com/ubuntu/ bionic main restricted
# deb-src http://lt.archive.ubuntu.com/ubuntu/ bionic main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://lt.archive.ubuntu.com/ubuntu/ bionic-updates main restricted
# deb-src http://lt.archive.ubuntu.com/ubuntu/ bionic-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://lt.archive.ubuntu.com/ubuntu/ bionic universe
# deb-src http://lt.archive.ubuntu.com/ubuntu/ bionic universe
deb http://lt.archive.ubuntu.com/ubuntu/ bionic-updates universe
# deb-src http://lt.archive.ubuntu.com/ubuntu/ bionic-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu 
## team, and may not be under a free licence. Please satisfy yourself as to 
## your rights to use the software. Also, please note that software in 
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://lt.archive.ubuntu.com/ubuntu/ bionic multiverse
# deb-src http://lt.archive.ubuntu.com/ubuntu/ bionic multiverse
deb http://lt.archive.ubuntu.com/ubuntu/ bionic-updates multiverse
# deb-src http://lt.archive.ubuntu.com/ubuntu/ bionic-updates multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://lt.archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse
# deb-src http://lt.archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu bionic partner
# deb-src http://archive.canonical.com/ubuntu bionic partner

deb http://security.ubuntu.com/ubuntu bionic-security main restricted
# deb-src http://security.ubuntu.com/ubuntu bionic-security main restricted
deb http://security.ubuntu.com/ubuntu bionic-security universe
# deb-src http://security.ubuntu.com/ubuntu bionic-security universe
deb http://security.ubuntu.com/ubuntu bionic-security multiverse
deb http://archive.canonical.com/ubuntu bionic multiverse
# deb-src http://archive.canonical.com/ubuntu bionic multiverse
deb http://archive.canonical.com/ubuntu multiverse
# deb-src http://archive.canonical.com/ubuntu multiverse
deb http://download.virtualbox.org/virtualbox/debian bionic contrib
# deb-src http://download.virtualbox.org/virtualbox/debian bionic contrib
# deb-src http://security.ubuntu.com/ubuntu bionic-security multiverse

Sorry,im a newbie in Ubuntu,but as i see the problem is with this one **deb http://archive.canonical.com/ubuntu multiverse** (??)

Where can be a problem? thank u !

Sasha
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1 Answers1

4

The incorrect line is this one:

deb http://archive.canonical.com/ubuntu multiverse

The ubuntu release name is missing.

The correct line:

deb http://archive.canonical.com/ubuntu bionic multiverse

already exists 2 lines above the incorrect one and it contains the release name: bionic.

You should delete or comment out with a # the incorrect line, save the sources.list file and run:

sudo apt update

right after you save it.

Editing steps:

  1. Open a terminal and type sudo nano /etc/apt/sources.list.
  2. Give your user password to proceed.
  3. Find line 53 (deb http://archive.canonical.com/ubuntu multiverse).
  4. Add # and a space in the beginning of that line.
  5. The line should look like this now: # deb http://archive.canonical.com/ubuntu multiverse.
  6. Press Ctrl-X and answer the question to save the modified file with Y and Enter.
  7. Now the file should be saved and the editor should be closed. Run sudo apt update for the system to be informed about the changes you made and you should be OK.
Stormlord
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  • Can u please write for me steb by step ,what i must do,cuz i only yesterday opened ubuntu universe for myself xD I open the terminal ,what i need to do next to edit that row? im stupid af – Sasha Dec 27 '20 at 13:02
  • I suggest removing that line. Why keep it? – Pilot6 Dec 27 '20 at 13:16
  • I have added the steps you need in my answer. – Stormlord Dec 27 '20 at 13:16
  • @Pilot6, I proposed the commenting out as an easier solution. Removing the line entirely is better of cource. – Stormlord Dec 27 '20 at 13:18
  • Its some kinda magic !Thank u a lot! – Sasha Dec 27 '20 at 13:32
  • You're welcome. Please accept this answer by clicking on the tick sign on the top left of the answer if everything is OK now, so that your issue is marked as solved. :) – Stormlord Dec 27 '20 at 14:20