uname -a
Linux OM 4.19.6-041906-generic #201812030857 SMP Mon Dec 3 13:59:30 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux


lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 19.04
Release:	19.04
Codename:	disco

# 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://in.archive.ubuntu.com/ubuntu/ disco main restricted
# deb-src http://in.archive.ubuntu.com/ubuntu/ bionic main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://in.archive.ubuntu.com/ubuntu/ disco-updates main restricted
# deb-src http://in.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://in.archive.ubuntu.com/ubuntu/ disco universe
# deb-src http://in.archive.ubuntu.com/ubuntu/ bionic universe
deb http://in.archive.ubuntu.com/ubuntu/ disco-updates universe
# deb-src http://in.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://in.archive.ubuntu.com/ubuntu/ disco multiverse
# deb-src http://in.archive.ubuntu.com/ubuntu/ bionic multiverse
deb http://in.archive.ubuntu.com/ubuntu/ disco-updates multiverse
# deb-src http://in.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-src http://in.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 disco-security main restricted
# deb-src http://security.ubuntu.com/ubuntu bionic-security main restricted
deb http://security.ubuntu.com/ubuntu disco-security universe
# deb-src http://security.ubuntu.com/ubuntu bionic-security universe
deb http://security.ubuntu.com/ubuntu disco-security multiverse
# deb-src http://security.ubuntu.com/ubuntu bionic-security multiverse
# deb [arch=amd64] https://download.docker.com/linux/ubuntu bionic stable # disabled on upgrade to disco
# deb-src [arch=amd64] https://download.docker.com/linux/ubuntu bionic stable
deb http://archive.canonical.com/ disco partner
# deb-src http://archive.canonical.com/ cosmic partner