I am a very new Ubuntu and Linux user and I encounter the following warnings when updating with sudo apt-get update:
Hit:1 http://dl.google.com/linux/chrome/deb stable InRelease
Hit:2 http://ppa.launchpad.net/cappelikan/ppa/ubuntu hirsute InRelease
Hit:3 http://ppa.launchpad.net/linuxuprising/ppa/ubuntu hirsute InRelease
Hit:4 http://archive.ubuntu.com/ubuntu hirsute InRelease
Hit:5 http://archive.canonical.com/ubuntu hirsute InRelease
Get:6 http://archive.ubuntu.com/ubuntu hirsute-updates InRelease [109 kB]
Hit:7 http://archive.ubuntu.com/ubuntu hirsute-backports InRelease
Hit:8 http://archive.ubuntu.com/ubuntu hirsute-security InRelease
Fetched 109 kB in 1s (142 kB/s)
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
All packages are up to date.
W: Skipping acquire of configured file 'multiverse/binary-amd64/Packages' as repository 'http://archive.canonical.com/ubuntu hirsute InRelease' doesn't have the component 'multiverse' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'multiverse/binary-i386/Packages' as repository 'http://archive.canonical.com/ubuntu hirsute InRelease' doesn't have the component 'multiverse' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'multiverse/i18n/Translation-en' as repository 'http://archive.canonical.com/ubuntu hirsute InRelease' doesn't have the component 'multiverse' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'multiverse/i18n/Translation-en_US' as repository 'http://archive.canonical.com/ubuntu hirsute InRelease' doesn't have the component 'multiverse' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'multiverse/dep11/Components-amd64.yml' as repository 'http://archive.canonical.com/ubuntu hirsute InRelease' doesn't have the component 'multiverse' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'multiverse/dep11/icons-48x48.tar' as repository 'http://archive.canonical.com/ubuntu hirsute InRelease' doesn't have the component 'multiverse' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'multiverse/dep11/icons-64x64.tar' as repository 'http://archive.canonical.com/ubuntu hirsute InRelease' doesn't have the component 'multiverse' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'multiverse/dep11/icons-64x64@2.tar' as repository 'http://archive.canonical.com/ubuntu hirsute InRelease' doesn't have the component 'multiverse' (component misspelt in sources.list?)
W: Skipping acquire of configured file 'multiverse/cnf/Commands-amd64' as repository 'http://archive.canonical.com/ubuntu hirsute InRelease' doesn't have the component 'multiverse' (component misspelt in sources.list?)
I know I should edit the sources.list, but I can not tell for sure which line, this is the output of cat /etc/apt/sources.list:
# deb cdrom:[Ubuntu 21.04 _Hirsute Hippo_ - Release amd64 (20210420)]/ hirsute main restricted
See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
newer versions of the distribution.
deb http://archive.ubuntu.com/ubuntu hirsute main restricted
deb-src http://ro.archive.ubuntu.com/ubuntu/ hirsute main restricted
Major bug fix updates produced after the final release of the
distribution.
deb http://archive.ubuntu.com/ubuntu hirsute-updates main restricted
deb-src http://ro.archive.ubuntu.com/ubuntu/ hirsute-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://archive.ubuntu.com/ubuntu hirsute universe
deb-src http://ro.archive.ubuntu.com/ubuntu/ hirsute universe
deb http://archive.ubuntu.com/ubuntu hirsute-updates universe
deb-src http://ro.archive.ubuntu.com/ubuntu/ hirsute-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://archive.ubuntu.com/ubuntu hirsute multiverse
deb-src http://ro.archive.ubuntu.com/ubuntu/ hirsute multiverse
deb http://archive.ubuntu.com/ubuntu hirsute-updates multiverse
deb-src http://ro.archive.ubuntu.com/ubuntu/ hirsute-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://archive.ubuntu.com/ubuntu hirsute-backports main restricted universe multiverse
deb-src http://ro.archive.ubuntu.com/ubuntu/ hirsute-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 hirsute partner multiverse
deb-src http://archive.canonical.com/ubuntu hirsute partner
deb http://archive.ubuntu.com/ubuntu hirsute-security main restricted
deb-src http://security.ubuntu.com/ubuntu hirsute-security main restricted
deb http://archive.ubuntu.com/ubuntu hirsute-security universe
deb-src http://security.ubuntu.com/ubuntu hirsute-security universe
deb http://archive.ubuntu.com/ubuntu hirsute-security multiverse
deb-src http://security.ubuntu.com/ubuntu hirsute-security multiverse
This system was installed using small removable media
(e.g. netinst, live or single CD). The matching "deb cdrom"
entries were disabled at the end of the installation process.
For information about how to configure apt package sources,
see the sources.list(5) manual.
This is the output of lsb_release -a:
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 21.04
Release: 21.04
Codename: hirsute
