TestOut Linux Pro Practice Test

The switch that can be used with the killall command to terminate an entire process group is the -g option. When this switch is specified, killall targets all processes that belong to the specified process group, rather than just terminating individual processes. This can be particularly useful in scenarios where it's necessary to clear an entire group of related processes that were launched together. Using -g with killall proves significant in managing processes that work as a collective unit or in a parent-child relationship. It streamlines the administrative task of terminating these processes, ensuring that no orphaned processes from the same group remain active, leading to a cleaner system state. The other options do not have this functionality related to targeting process groups, as they pertain to different actions or parameters that don't include the grouping capability that -g provides.