do-release-upgrade

"do-release-upgrade" is a command line tool used in Ubuntu Linux to upgrade the distribution to a newer release. It automates the process of upgrading from one Ubuntu release to the next, making it a convenient tool for system administrators and users. The command first checks for any new releases available, providing information about the new release, its features, and any specific upgrade instructions. It ensures that the current release is up to date by downloading and installing all updates before initiating the upgrade process. During the upgrade, it disables any third-party repositories to avoid conflicts and compatibility issues. It modifies the apt sources list to use the new release's repositories and updates all installed packages to their latest versions for the new release. The upgrade process involves removing or replacing certain packages and dependencies to ensure compatibility with the new release. It may prompt the user for confirmation or provide options to resolve package conflicts or choose certain upgrade settings. Once the upgrade is completed successfully, it generates a detailed report containing any warnings or errors encountered during the process. It is recommended to create backups of important data and configurations before running "do-release-upgrade" to avoid any potential data loss during the upgrade process.