Workbook 3 User and Groups : Chapter 3: Examining User Information

Question 1

What does the id command output?

Answer 1

determine a user’s membership information [20]

Question 2

What commands can be used to determine who is logged in?

Answer 2

users: - Print a simple list of who is currently logged in.
who: - provides detailed information about who is currently logged on
w: - give more detail who is online

Question 3

What does the finger command do?

Answer 3

to see not only if that user is logged on, but if

they have read their mail, what time they last logged in, and other information as well. [22]

Question 4

In the who output, what is the USER field

Answer 4

The username of the logged on user.

Question 5

In the who output TTY of the logged on user.

Answer 5

The terminal that the user logged in from

Question 6

In the who output FROM of the logged on user

Answer 6

If the user is logged in over the network, the hostname that the user connected from.

Question 7

In the who output LOGIN@ of the logged on user

Answer 7

The time that the user started the session.

Question 8

In the who output IDLE of the logged on user

Answer 8

How much time has expired since the terminal has seen interaction.

Question 9

In the who output JCPU of the logged on user

Answer 9

The amount of CPU time consumed by all currently running processes associated with
the terminal session.

Question 10

In the who output PCPU of the logged on user

Answer 10

The amount of CPU time consumed by only the current process only, as named in the
“WHAT” field.

Question 11

In the who output WHAT of the logged on user

Answer 11

The user’s currently running process.