How to use the pstree command: Linux tip

The video tutorial introduces the PS3 command in Linux, which provides a hierarchical view of running processes, showing their relationships and which processes have spawned others. It demonstrates a simple example using the PS3 command to display a process tree and a more complex example showing processes run by a specific user. The tutorial also covers viewing processes run by the root user, highlighting the hierarchical nature of the output and how system D initiates other processes.

Describe the output of the PS3 command when run by the root user.

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How does the PS3 command help in understanding the process hierarchy?

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