To upgrade or update a single package using apt-get on a Debian-based Linux system, you can use the apt-get install command with the --only-upgrade option. This will install the latest version of the package, without installing any new dependencies or upgrading any other packages.
For example, to upgrade the package package_name, you can run the following command:
sudo apt-get install --only-upgrade package_name
This will update the package to the latest available version, while keeping all other packages at their current versions.
You can also use the apt-get upgrade command with the --only-upgrade option to achieve the same result. For example:
sudo apt-get upgrade --only-upgrade package_name
Keep in mind that the apt-get upgrade command will upgrade all installed packages that have available updates, unless you specify the --only-upgrade option.