Often I don't need to do
apt-get update
because that command will also update the system when I only need to update a software only. The reason is for example firefox
new version only require 20++ MB alone while updating the system will take more bandwidth than needed.
So can I do this or it's not possible within Ubuntu?
sudo apt-get update
does not update packages, it only updates the list of packages and available versions.sudo apt-get upgrade
updates the packages themselves