Ubuntu¶

sudo hostnamectl set-hostname <hostname>

sudo do-release-upgrade -d

mkdir ~/.screen && chmod 700 ~/.screen

export SCREENDIR=$HOME/.screen

(
  sudo umount /var/snap
  sudo apt purge snapd
  sudo rm -rf ~/snap /snap /var/snap /var/lib/snapd
)

Reading cache

Checking package manager

Can not upgrade 

An upgrade from 'hirsute' to 'jammy' is not supported with this tool.

#!/bin/bash
echo "Updating"
sudo apt-get update
sudo apt-get upgrade -y
sudo apt-get dist-upgrade -y
echo "Bypass check"
sudo sed -i 's/continue/pass/g' /usr/lib/python3/dist-packages/UpdateManager/Core/MetaRelease.py
echo "Upgrade distro"
sudo do-release-upgrade

chmod +x script.sh && ./script.sh

sudo apt update
Err:6 http://archive.ubuntu.com/ubuntu eoan Release
404 Not Found [IP: 91.189.88.142 80]

# backup your sources file
cp /etc/apt/sources.list /etc/apt/sources.list.bak 

# replace the links with the archive address
sudo sed -i -re 's/([a-z]{2}.)?archive.ubuntu.com|security.ubuntu.com/old-releases.ubuntu.com/g' /etc/apt/sources.list

# run update again
sudo apt update && sudo apt dist-upgrade

sudo sed -i 's/#$nrconf{restart} = '"'"'i'"'"';/$nrconf{restart} = '"'"'a'"'"';/g' /etc/needrestart/needrestart.conf