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In: Computer Science

QUESTION 1 Match the following LINUX/UNIX commands with what they do. du whereis users who...

QUESTION 1

Match the following LINUX/UNIX commands with what they do.

	du
	whereis
	users
	who am i

A.	display a compact list of users currently logged in
B.	locate the binary, source, and manual page files for a command
C.	summarize disk usage
D.	who am i currently logged in as on the Linux server.

QUESTION 2

What rm command option (flag) would you use to remove a file that begins with a - (hyphen)?

		-f
		-p
		-- (read this as dash dash)
		-i

QUESTION 3

Execute the finger command as the following: finger fveglian

The output will contain the following line of text: Project: I have three projects to complete by the end of the semester.

From what file in my home directory is the finger command getting that line of text?
Provide only the correct file name.

QUESTION 4

There is a file called lynx in my home directory. It has an i-node number of 16161.

There are two file entries and that are hard linked to lynx and have the same i-node number.

What are the two files by name?

QUESTION 5

Reference the man page for the who command.

Which flags (options) when used with the who command will generate the following output?

The output will resemble the following. The date and time may be different.

system boot 2015-05-16 09:04
run-level 2 2015-05-16 09:04

Expert Solution

Question 1:

ANS:

Here I have arranged the usage of commands in appropiate way.

Command Purpose

du summarize disk usage

whereis locate the binary, source, and manual page files for a command

users display a compact list of users currently logged in.

who am i who am i currently logged in as on the Linux server.

Question 2:

rm command is used to remove each specified FILE.
We are using diffrent options for different purposes.

As per your question,We need to use '_f' to remove that file forcebly and without prompting anything.

So '-f 'is the correct answer.

Question5:

The who command used to get the information about all users who are currently logged in.

Syntax: who [ OPTION ]... [ FILE ].

Options:

-a dislpays all users accessing
-b Display the time of the last system boot.
-d Display dead processes.
-h Print a line of column headings.
--ips Print IP addresses instead of hostnames.
--lookup Attempt to canonicalize hostnames via DNS
-p Print active processes spawned by init.
-q Displays all login names, and a count of all logged-on users.

And we also have few more options.

By using '-b' option we can get last system time boot.

So that the flag is '-b'

venereology answered 1 year ago

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