I’m having a little difficulty finding the best Ubuntu terminal command to use to find the following questions: Which process appears to be using the…

I’m having a little difficulty finding the best Ubuntu terminal command to use to find the following questions:

Which process appears to be using the most CPU on the system currently?

How much is it using? Which process has used the most total amount of CPU time?

How much total cpu time has been used.

Also For a 30 second time interval:

How much CPU was used for tasks in “User Space?”

How much CPU was used for tasks in “Kernel Space?”

What percentage of time was the CPU idle?

What percentage of time was the CPU “waiting?”

Describe the activity on the run queue? i.e. runnable and blocked threads.