Linux Essentials help

Step 1. Open a terminalwindow.
Step 2. List the processes that are running in the currentshell.
Step 3. List all processes that are running on thissystem.
Step 4. Using the grep and ps commands, list all processes that arerunning on this system that end insh.
Step 5. Using the pgrep command, list all processes that arerunning on this system that end in sh.
Step 6. Display all processes that are running by using the topcommand. (Keep this command running for the next fewsteps.)
Step 7. While in the top command, display the helpscreen.
Step 8. While in the top command, change the refresh period from 2seconds to 5seconds.
Step 9. Quit the topcommand.
Step 10. Execute the gnome-calculator program in thebackground.
Step 11. In the current shell, list all runningjobs.
Step 12. Use the job number of the gnome-calculator program withthe kill command to stop (kill) theprogram.
Step 13. Execute the gnome-calculator program in the backgroundfivetimes.

Step 14. Use the killall command to stop (kill) all instances ofthe gnome-calculatorprogram.
Step 15. Execute the gnome-calculator program in thebackground.
Step 16. In the current shell, use the ps command to list allrunningprocesses.
Step 17. Change the process priority of the gnome-calculatorprogram to a nice value of 15.