Here’s a little bash gem for updating Ubuntu (or, really, any apt-get box). Check out the sweet bash for loop:
sudo bash -c 'for i in update {,dist-}upgrade auto{remove,clean}; do apt-get $i -y; done’This single line bash command to runs a complete apt-get update that’s essentially a one line compression of this multi-line bash script:
sudo -s -- <<EOF apt-get update apt-get upgrade -y apt-get dist-upgrade -y apt-get autoremove -y apt-get autoclean -y EOF