How do I update Ubuntu using terminal command line

To update an Ubuntu system using the command line, you can use the apt utility. This utility is used to manage packages on an Ubuntu system and can be used to update the system to the latest available versions of installed packages.

Here are the steps to update an Ubuntu system using the command line:

1. First, update the package index by running the following command:

sudo apt update

This command will download the latest package information from the repositories configured on the system.

2. Once the package index has been updated, you can upgrade the system by running the following command:

sudo apt upgrade

This command will upgrade all installed packages to the latest available versions. If there are any package dependencies that need to be resolved, apt will prompt you to confirm the installation of any additional packages that are required.

3. If you want to upgrade to a new version of Ubuntu (e.g. from 18.04 to 20.04), you will need to run the following command:

sudo apt dist-upgrade

This command will upgrade the system to the latest available version of Ubuntu, including any new dependencies that may be required.

4. After the update process has completed, you may need to reboot the system to apply the changes. You can do this by running the following command:

sudo reboot

It is important to make sure that you have a backup of your data before running the update process, as the process can be risky and may result in data loss.

For more information about updating an Ubuntu system using the command line, you can consult the apt documentation or visit the Ubuntu website.