Kali

Question 1

How do I change my password in the terminal?

Answer 1

passwd

Question 2

What is FHS?

Answer 2

Filesystem Hierarchy Standard

Question 3

What is in the /bin path?

Answer 3

Basic programs ls, cd, cat, etc.

Question 4

What is in the /sbin path?

Answer 4

System programs (fdisk, mkfs, sysctl, etc)

Question 5

What is in the /etc path?

Answer 5

Configuration files

Question 6

What is in the /tmp path?

Answer 6

Temporary files (typically deleted on boot)

Question 7

What is in the /usr/bin path?

Answer 7

Applications (apt, ncat, nmap, etc.)

Question 8

What is in the /usr/share path?

Answer 8

Application support and data files

Question 9

What is the apropos command used for?

Answer 9

With the apropos command, we can search the list of man page descriptions for a possible
match based on a keyword.

Question 10

How to create multiple directories?

Answer 10

mkdir -p test/{dir1,dir2,dir3}

Question 11

Which command

Answer 11

Searches through the directories that are defined in the $PATH environment variable for a given file name. This variable contains a listing of directories that Kali searches when a command is issued without its path.

Question 12

Locate command

Answer 12

The locate command is the quickest way to find the locations of files and directories in Kali. In
order to provide a much shorter search time, locate searches a built-in database named
locate.db rather than the entire hard disk itself. This database is automatically updated on a
regular basis by the cron scheduler. To manually update the locate.db database, you can use the
updatedb command.

Question 13

Find command

Answer 13

The find command is the most complex and flexible search tool among the three. Mastering its
syntax can sometimes be tricky, but its capabilities go beyond a normal file search. The main advantage of find over locate is that it can search for files and directories by more than just the name. With find, we can search by file age, size, owner, file type, timestamp, permissions, and more.

Question 14

How to look at the man page for one of your preferred commands?

Answer 14

man command

Question 15

How to look for a keyword related to file compression in man?

Answer 15

man -k “file compression”

Question 16

How to use which to locate the pwd command?

Answer 16

which pwd

Question 17

How to use locate to locate wce32.exe?

Answer 17

locate wce32.exe

Question 18

How to use find to identify any file (not directory) modified in the last day, NOT owned by the root
user and execute ls -l on them. Chaining/piping commands is NOT allowed!

Answer 18

find . -user kali -type f -mtime -1 -exec dirname {} \; sort –unique

Question 19

What is Kali Linux?

Answer 19

Is a specialized Linux distribution aimed at security professionals.

Question 20

What is SSH?

Answer 20

Secure SHell

Question 21

What is SSH Service used for?

Answer 21

SSH service is most commonly used to remotely access a computer, using secure, encrypted protocol.

Question 22

SSH service listens on which port by default?

Answer 22

22

Question 23

How to start service in Linux?

Answer 23

systemctl start

Question 24

How to start SSH service on Linux?

Answer 24

sudo systemctl start ssh

Question 25

How to check is ssh is running on Linux?

Answer 25

sudo ss -antlp | grep sshd

Question 26

How to start service automatically at boot time?

Answer 26

sudo systemctl enable ssh

Question 27

Which command is used to enable and disable most services within Linux?

Answer 27

systemctl

Question 28

Which HTTP Service is often used during a penetration test?

Answer 28

Apache

Question 29

HTTP Service Default Port

Answer 29

80

Question 30

How to start HTTP Service on Linux?

Answer 30

sudo systemctl start apache2

Question 31

How to verify if the HTTP Service is running and listening on TCP Port 80 with ss and grep command?

Answer 31

sudo ss -antlp | grep apache

Question 32

How to have a HTTP Service start a boot time?

Answer 32

sudo systemctl enable apache2

Question 33

How most services in Linux are operated?

Answer 33

SSH and HTTP, through their service or init scripts.

Question 34

How to see a table of all available services?

Answer 34

systemctl list-unit-files

Question 35

How to start service?

Answer 35

sudo systemctl enable *.service

Question 36

How to stop service?

Answer 36

sudo systemctl disable *.service

Question 37

How to enable SSH service to start on system boot?

Answer 37

sudo systemctl enable ssh

Question 38

What is APT?

Answer 38

APT is a set of tools that helps manage packages, or applications, on a Debian-based system.

Question 39

How to add package to the system?

Answer 39

apt install

Question 40

How to install “pure-ftpd” with APT?

Answer 40

sudo apt install pure-ftpd

Question 41

How to remove package by APT?

Answer 41

sudo apt remove –purge

Question 42

What apt remove -purge do?

Answer 42

The apt remove –purge command completely removes packages from Kali. It is important to note that removing a package with apt remove removes all package data, but leaves usually small (modified) user configuration files behind, in case the removal was accidental. Adding the –purge option removes all the leftovers.

Question 43

What is dpkg?

Answer 43

dpkg is the core tool used to install a package, either directly or indirectly through APT. It is also the preferred tool to use when operating offline, since it does not require an Internet connection. Note that dpkg will not install any dependencies that the package might require.

Question 44

How to install package with dpkg?

Answer 44

sudo dpkg -i man-db_2.7.0.2-5_amd64.deb

Question 45

How to search for a tool not currently installed in Linux?

Answer 45

sudo apt-cache search tool

Question 46

How to install a tool by APT?

Answer 46

sudo apt-get install tool

Question 47

How to remove a tool by APT?

Answer 47

sudo apt remove –purge tool