how to update ubuntu

sudo apt update && sudo apt upgrade -y
#or use it seperately
sudo apt update
sudo apt upgrade
#you make wanna run below command to remove unwanted
#and free up some space
sudo apt autoremovesudo apt update && sudo apt upgrade -y# "To update Linux type:"
sudo apt-get update
# Enter your user's password.echo "sudo apt update && sudo apt -y upgrade && sudo apt -y dist-upgrade && sudo apt -y autoremove && sudo apt autoclean" > update && sudo mv update /usr/local/bin/update && sudo chmod +x /usr/local/bin/update
#gets package(s) update definitions
sudo apt update
#upgrades the package(s) for which update definitions are received
sudo apt upgrade
# Upgrades all applications
sudo apt-get upgrade