Upgrade/Update Ubuntu (Linux)

#Upgrade Currently Installed Packages
sudo apt-get update

#upgrade installed packages to their latest available versions:
sudo apt-get upgrade

#Once it finishes, use the dist-upgrade command, which will perform upgrades involving changing dependencies, adding or removing new #packages as necessary. This will handle a set of upgrades which may have been held back by apt-get upgrade:
sudo apt-get dist-upgrade

# It’s important to install this update manager core package this will trick the system to think there is a new LTS available and allow you to do an in place upgrade.
# sudo apt-get install update-manager-core

# This is based on settings in /etc/update-manager/release-upgrades
sudo do-release-upgrade

# Check Version
lsb_release -a

#Clean cache
sudo apt-get clean

#Used to remove packages that were automatically installed to satisfy dependencies for some package and that are no more needed.
sudo apt-get autoremove

#Remove removes the package. Purge removes config files too. This of course, does not apply to packages that hold configuration files inside the user's home folder
sudo man apt-get remove
sudo man apt-get purge

#https://www.digitalocean.com/community/tutorials/how-to-upgrade-to-ubuntu-16-04-lts
#https://wiki.ubuntu.com/XenialXerus/ReleaseNotes