1} How do I started a processing job on a remote server that probably won't be finished before the lab closes for the evening. Demonstrate how can you keep the job running until finished on the remote server after you log out.

2( system seems to be slow or almost frozen. a) demonstrate a command to determine what program is using up system memory. b) demonstrate a command that terminates the problem process.

3(What is the difference between a job and a process? b. How do you suspend the foreground job? c. How do you move a process to the background. d. Bring back a suspended job to the foreground?

4(Show a crontab entry to periodically ping a remote server once every day at 1:15 AM with a summary of results emailed to you. Then demonstrate a single command that displays the contents of your crontab file.

5(Compare and contrast running a process with the &, with nohup, and with screen. When would these be appropriate? How do you terminate each?

6(Explain the meaning of the parameters $$ and $! .

7( How do you determine if the service sshd is running or not? b) If not, how would you start this service? c) How do you ensure that the service always runs when the computer is booted?