upgrade patch to force upgrade impish distro

- RandomCoderOrg/ubuntu-on-android#178

Author: SaicharanKandukuri

scripts/upgrade_patch/upgrade.sh

@@ -1,2 +1,100 @@
-#!/usr/bin/env bash
-:
+#!/bin/bash
+## FORCE UPGRADE TO Jammy
+# mirror method
+
+DISTRO="jammy"
+_MIRROR_PORTS="http://ports.ubuntu.com/ubuntu-ports/"
+_MIRROR="http://archive.ubuntu.com/ubuntu/"
+
+ask() {
+	msg="$1"
+	echo -ne "$msg [Y/N]: "
+	read -r response
+
+	case $response in
+		"Y"|"y"|""|"yes"|"YES") return 0 ;;
+		"N"|"n"|"no"|"NO") return 1 ;;
+		*) return 1 ;;
+	esac
+}
+
+function upgrade() {	
+# set MIRROR
+case $(run_cmd dpkg --print-architecture) in
+        amd64|i386) MIRROR=$_MIRROR ;;
+        *) MIRROR=$_MIRROR_PORTS ;;
+esac
+
+
+# Inject new sources.list file
+# By default proot-distro changes directory to distro root!
+
+[[ ! -f etc/apt/sources.list ]] && touch etc/apt/sources.list
+[[ ! -w etc/apt/sources.list ]] && chmod +r+x etc/apt/sources.list
+
+cat <<-  EOF > etc/apt/sources.list
+# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
+# newer versions of the distribution.
+deb $MIRROR $SUITE main restricted
+# deb-src $MIRROR $SUITE main restricted
+## Major bug fix updates produced after the final release of the
+## distribution.
+deb $MIRROR $SUITE-updates main restricted
+# deb-src $MIRROR $SUITE-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 $MIRROR $SUITE universe
+# deb-src $MIRROR $SUITE universe
+deb $MIRROR $SUITE-updates universe
+# deb-src $MIRROR $SUITE-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 $MIRROR $SUITE multiverse
+# deb-src $MIRROR $SUITE multiverse
+deb $MIRROR $SUITE-updates multiverse
+# deb-src $MIRROR $SUITE-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 $MIRROR $SUITE-backports main restricted universe multiverse
+# deb-src $MIRROR $SUITE-backports main restricted universe multiverse
+EOF
+
+# Trigger apt [ update & upgrade ]
+
+run_cmd apt update || apt-get update
+run_cmd apt upgrade -y || apt upgrade -y
+}
+
+# get confirmation
+echo "FORCE UPGRADE SCRIPT.."
+sleep 2
+echo "DISTRO=$DISTRO"
+echo
+echo "READ CAREFULLY"
+echo
+sleep 1
+echo "as of july 14 both ubuntu 21.04 & ubuntu 21.10 reached to their end-of-life and no longer supported by ubuntu"
+echo "this script force upgrade your linux distro to $DISTRO"
+echo
+echo "This script may take around ~2hrs depending on device speed to fully upgrade distro"
+
+if ask "Do you want to continue ?"; then
+	echo "get some snacks 🍪"
+	sleep
+	echo "watch a movie 🍿"
+	sleep
+	echo "This is gonna take some time!"
+	sleep 2
+	upgrade
+	echo "👌 Upgrade function did its job!"
+	echo "A script by udroid_team"
+else
+	echo "Upgrade skipped"
+fi