Which command line utility is used to display a tree-like view of processes?

Which command line utility is used to display a tree-like view of processes?

• A. ps
• B. pstree
• C. kill
• D. nice

Answer: (B)

Understanding how processes relate to one another is about the process tree. To visualize that hierarchy, you use a tool designed to render parent-child relationships as a tree. pstree displays the process tree by listing each process under its parent, creating a clear, nested view that makes it easy to see which processes spawned others. You can add options like -p to show numeric PIDs or -a to show full command lines, but the core idea is that pstree specializes in a tree-like representation of processes. Others don’t fit this purpose: ps reports process status and can show a forest with an option like --forest, but it isn’t primarily a tree viewer by default. kill sends signals to stop processes, and nice adjusts scheduling priority; neither provides a hierarchical process view.

Understanding how processes relate to one another is about the process tree. To visualize that hierarchy, you use a tool designed to render parent-child relationships as a tree. pstree displays the process tree by listing each process under its parent, creating a clear, nested view that makes it easy to see which processes spawned others. You can add options like -p to show numeric PIDs or -a to show full command lines, but the core idea is that pstree specializes in a tree-like representation of processes.

Others don’t fit this purpose: ps reports process status and can show a forest with an option like --forest, but it isn’t primarily a tree viewer by default. kill sends signals to stop processes, and nice adjusts scheduling priority; neither provides a hierarchical process view.