apt-history-script.sh

### pars for fun: install | remove | rollback
function apt-history(){

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

#https://askubuntu.com/questions/21657/how-do-i-show-apt-get-package-management-history-via-command-line/337006