Chapter 2: Getting Comfortable with Kali Linux

Question 1

What command is used to view manuals?

Answer 1

man

Question 2

What command is used to search for keywords amongst manuals?

Answer 2

man -k

Question 3

Using regular expressions how can we narrow the search for the man keyword?

Answer 3

man -k ‘^passwd$’

Question 4

What does apropos do?

Answer 4

Search for keywords amongst manual page descriptions.

Question 5

What does ls, the -a and -l switches do?

Answer 5

ls shows the directory contents. -a shows all files and -l displayed each file on a separate line (good for automation).

Question 6

What does pwd do?

Answer 6

Print working directory.

Question 7

What does cd do?

Answer 7

Change directory

Question 8

What does mkdir do? How do we make multiple folders and subfolders at once?

Answer 8

mkdir makes a file or directory. To create multiple at once use mkdir -p test{test1,test2,test3}

Question 9

What does the which command do?

Answer 9

Searches for files in the PATH variable

Question 10

How do you look at the $PATH variable

Answer 10

echo $PATH

Question 11

What does the locate command do and why is it unique? How do we update the database?

Answer 11

It searches for files in kali and is updated through a database to shorten waiting time.

We update the database through sudo updatedb

Question 12

How do we use the find command? Use an example

Answer 12

find

find / -name sbd*

find is the command, / is the directory (root) -name is the switch and sbd* is the keyword.

Question 13

How do we start the ssh service?

Answer 13

sudo systemctl start ssh

Question 14

How do we verify sshd has started one we’ve used the systemctl command?

Answer 14

sudo ss -antlp | grep sshd

Question 15

How do we enable ssh to run on start up?

Answer 15

sudo systemctl enable ssh

Question 16

How do we start apache/HTTP service?

Answer 16

sudo systemctl start apache2

Question 17

How do we verify that apache has started?

Answer 17

sudo ss -antlp | grep apache

Question 18

How do we allow apache2 to start at boot time?

Answer 18

sudo systemctl enable apache2

Question 19

How do we show a list showing all services that can be used with systemctl?

Answer 19

systemctl list-unit-files

Question 20

How do we update the APT (advanced package tool) cache for faster installation?

Answer 20

sudo apt update

Question 21

How do we upgrade using apt?

Answer 21

sudo apt upgrade

Question 22

How do we upgrade a single program?

Answer 22

sudo apt upgrade

e.g. sudo apt upgrade metasploit-framework

Question 23

What is apt cache, how do we use it?

Answer 23

apt-cache stores information on potential upgrades.

To see if a particular program is present, use apt-cache search pure-ftpd

Question 24

How do we install using apt?

Answer 24

sudo apt install

Question 25

What are the two commands that remove programs and what is the difference?

Answer 25

sudo apt remove
sudo apt remove –purge

apt remove removes the programs core files but keeps configuration files (user settings etc).

purge will remove everything to do with the program.

Question 26

What is dpkg and how does it differ to apt?

Answer 26

dpkg is the core tool used to install packages either through apt or without.
it is unique in that it doesn’t require the internet in order to do it’s job.