apt-history

apt-history.sh

function apt-history(){
      case "$1" in
        install)
              cat /var/log/dpkg.log | grep 'install '
              ;;
        upgrade|remove)
              cat /var/log/dpkg.log | grep $1
              ;;
        rollback)
              cat /var/log/dpkg.log | grep upgrade | \
                  grep "$2" -A10000000 | \
                  grep "$3" -B10000000 | \
                  awk '{print $4"="$5}'
              ;;
        *)
              cat /var/log/dpkg.log
              ;;
      esac
}