Name:

class section:

1. What is the highest priority process currently running on your system? What is its nice number?
2. What command is used to change the nice number of an already running process?
3. What do the three decimal numbers in the display from uptime mean?
4. what does the 'u' in ps waux stand for?
5. what command will show a text representation of the lineage of all processes on the system?
6. What is a PID?
7. what command will show process names along with their PIDs and PPIDs?
8. what command will allow you to start a process at a different nice number?
9. On a linux system, what is the biggest (lowest priority) nice number?
10. On a linux system, what is the smallest (highest priority) nice number?
11. In plain English, what is the difference between VSZ and RSS in a ps display?
12. Whats the difference between CPU utilization and load average?
13. (2 points) What are two differences between du and df?
14. How would you call the top command in such a way that it refreshes its display every 3 seconds?
15. On a linux system, how would you display the amount of disk space used on each physical partition, in Kilobytes, Megabytes and gigabytes?
16. What are 3 ways to handle disk shortage problems?
17. (4 points) briefly describe, in English as plain and simple as possible, the meaning of four columns from a vmstat display. Each column should get at least a sentence of description.
18. (4 points) Identify four non-essential services running on your system, and show the commands necessary to kill them, and prevent them from starting at the next boot.