What type in the command to update the apt-get database with new or updated packages?

Apt-get update-updating information on available packages to update information on available packages, issue the following command: apt-get updateinstalling a packageto install a specified package, issue the following command:apt-get install packagewhere package specifies the name of the package to be installed.upgrading installed packagesto automatically upgrade all installed packages to the latest available version, issue the following command:apt-get upgrade package