However, ‘apt upgrade’ does not remove or install any new packages, even if they are dependencies of the upgraded packages. This command ensures that your system has the latest security patches, bug fixes, and feature enhancements for installed software. Once the package index is updated using ‘apt update’, ‘apt upgrade’ checks for newer versions of the installed packages and upgrades them accordingly. The ‘apt upgrade’ command, on the other hand, is used to upgrade the installed packages on the system. Does not make any changes to the installed software.Retrieves the latest package information from repositories.It does not install or upgrade any software on the system.
This command fetches the latest package information from the repositories and updates the local package index. The ‘apt update’ command is responsible for updating the package index, a list of available packages from the repositories defined in the system’s sources.list file.
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