What command in Linux updates package lists from the repositories?

What command in Linux updates package lists from the repositories?

• A. apt upgrade
• B. yum update
• C. apt update
• D. dpkg -i

Answer: (C)

The command that updates package lists from the repositories in Linux is "apt update." When executed, this command connects to the software repositories configured on the system and retrieves the latest package information. This process ensures that the system has the most current data about available packages, including new versions and dependencies. By running "apt update," you prepare the system for software installation or upgrades, as the package manager can make informed decisions based on the most up-to-date list of available packages. This is an essential step before performing installations or upgrades, as it allows the package manager to know what packages are available and their respective versions. The other options either pertain specifically to updating installed packages or are unrelated to updating package lists. For example, "apt upgrade" actually upgrades the installed packages based on the current package lists, while "yum update" serves a similar function in systems using the YUM package manager. "dpkg -i" is a command used for installing specific .deb package files, which does not involve updating package lists from repositories.

The command that updates package lists from the repositories in Linux is "apt update." When executed, this command connects to the software repositories configured on the system and retrieves the latest package information. This process ensures that the system has the most current data about available packages, including new versions and dependencies.

By running "apt update," you prepare the system for software installation or upgrades, as the package manager can make informed decisions based on the most up-to-date list of available packages. This is an essential step before performing installations or upgrades, as it allows the package manager to know what packages are available and their respective versions.

The other options either pertain specifically to updating installed packages or are unrelated to updating package lists. For example, "apt upgrade" actually upgrades the installed packages based on the current package lists, while "yum update" serves a similar function in systems using the YUM package manager. "dpkg -i" is a command used for installing specific .deb package files, which does not involve updating package lists from repositories.