1. If man who command is run summarize what they do?

2. who | wc -l What does it say about current systems usage?

3. If any flag option has been selected from man ulimit command and run individually what would be the output? If two flags are running together in the same command what would be the output?Does the order of the flags affect the order of the output?

4. Compare the output of the df and the du command. Describe what each of them does.

5. What info ps ax gives?

6. what ps ax | wc -l gives?