arch-automated-installer/system-setup.sh

#!/bin/bash

APT_CMD=$(which apt-get)
PACMAN_CMD=$(which pacman)

if [[ ! -z $APT_CMD ]]; then

    echo "System Identified: Debian"
    # Make sure System is Updated
    echo "apt-get update && apt-get upgrade -Y"
    #apt update && apt upgrade -Y

    # Setup apt sources
    while true;do
        read -rp "Would you like to use Debian Unstable? (y/n): " answer
        answer="${answer,,}"
        if [[ "$answer" = "y" ]]; then
            echo "Change apt sources"
            echo "cp -v ./debian-assets/debian-sid-sources.list /etc/sources.list"
            echo "apt-get update && apt-get upgrade -Y"
            break
        elif [[ "$answer" = "n" ]]; then
            echo "Proceeding with Debian Stable"
            break
        else
            echo "Invalid Input. Please enter 'y' or 'n'."
        fi
    done

    # Start System Setup
    
elif [[ ! -z $PACMAN_CMD ]]; then
    echo "Arch"
fi