APT-FAST Easy install

#!/usr/bin/env bash
apt_out_file=/etc/apt/sources.list.d/apt-fast.list
export CPU_CORE_COUNT=`cat /proc/stat | grep cpu | grep -E 'cpu[0-9]+' | wc -l`
export DEBIAN_FRONTEND=noninteractive
export OS_ID=$(cat /etc/os-release  | grep -E ^ID= | awk -F= '{print $2}' | awk '{print $1=$1}')
if [[ $OS_ID = ubuntu ]]; then
  export VERSION_CODENAME=$(cat /etc/os-release  | grep VERSION_CODENAME | awk -F= '{print $2}' | awk '{print $1=$1}')
else 
  export VERSION_CODENAME=focal
  export OS_ID=ubuntu
fi

echo """ # Generate Date: `date`
deb http://ppa.launchpad.net/apt-fast/stable/ubuntu $VERSION_CODENAME main 
deb-src http://ppa.launchpad.net/apt-fast/stable/ubuntu $VERSION_CODENAME main
""" | tee $apt_out_file

apt-key adv --keyserver keyserver.ubuntu.com --recv-keys A2166B8DE8BDC3367D1901C11EE2FF37CA8DA16B
apt-get update
DEBIAN_FRONTEND=noninteractive apt-get install -y apt-fast
echo debconf apt-fast/maxdownloads string $(( $CPU_CORE_COUNT * 2 )) | debconf-set-selections
echo debconf apt-fast/dlflag boolean true | debconf-set-selections
echo debconf apt-fast/aptmanager string apt | debconf-set-selections