apt-fast.sh

#!/bin/bash

set -eu
ARCHDIR=/var/cache/apt/archives
ARCHLIST=${ARCHDIR}/apt-fast_$$.list

# Test if aria2 is installed
if [ ! -x /usr/bin/aria2c ]; then
  echo "aria2 is not installed, perform installation? (y/n)"
  read ops
  case ${ops,,} in
  y) if apt-get install aria2 -y; then
    echo "aria2 installed"
  else
    echo "Unable to install the aria2. Are you sudo?"
    exit
  fi ;;
  n)
    echo "Aborting script"
    exit 1
    ;;
  esac
fi

# If the user entered arguments contain upgrade, install, or dist-upgrade
if echo "$@" | grep -Eqw "(dist-)?upgrade|(re)?install"; then
  echo "Working..."

  # Have apt-get print the information, including the URI's to the packages
  apt-get -y --print-uris $@ |
    grep -Po "(ht|f)tps?://[^\']+" >${ARCHLIST} &&
    aria2c -c -i ${ARCHLIST} -d ${ARCHDIR} ||
    echo "No files to download"
fi

# Perform the user's requested action via apt-get
apt-get $@

echo -e "\nDone! Verify that all packages were installed successfully. If errors are found, run apt-get clean as root and try again using apt-get directly.\n"

# Clean up
apt clean