What command installs all packages belonging to the group 'admintools' using yum?

The command used to install all packages belonging to a specific group, such as 'admintools', is structured around the concept of package groups in the YUM (Yellowdog Updater Modified) package management system, which is commonly used on Red Hat-based distributions of Linux.

Using 'yum groupinstall' is the correct method because it directly references the group of packages known as 'admintools'. This command tells YUM to look for the defined package group in its repositories and install all the packages that are part of that group. This is efficient as it simplifies the installation process by allowing the user to specify a group rather than listing each individual package.

In contrast, the other options do not fulfill the requirement of installing a package group. The first option suggests using 'pkgsel', which is not a standard command in the YUM toolset for package management on RPM-based systems. The second option attempts to install packages using a wildcard with 'admintools/*', but this method lacks the specificity and organization provided by group management, potentially leading to inconsistencies if some packages are not included. Lastly, 'yum taskinstall' is related to a different mechanism for handling tasks rather than package groups in YUM, making it an incorrect approach for this