Linux

Question 1

When was Linux created?

Answer 1

1991

Question 2

What are the 3 major Linux distribution families?

Answer 2

RedHat
SUSE
Debian

Question 3

What is the most commonly used Debian GUI?

Answer 3

GNOME

Question 4

What is the root symbol in Linux?

Answer 4

/

Question 5

What is everything (processes, devices, netowork, etc.) represented by in Linux?

Answer 5

Files

Question 6

How do you call networking service processes?

Answer 6

daemons

Question 7

How do you call the brain the glues the hardware with the applications?

Answer 7

The kernel

Question 8

What is a distribution?

Answer 8

A collection of programs with the Linux kernel

Question 9

What is a bootloader?

Answer 9

The program that boots the OS

Question 10

What is a service?

Answer 10

A program that runs in the background

Question 11

What is a filesystem?

Answer 11

The method of storing and organizing files (ext3, FAT, NTFS, etc.)

Question 12

What is an XWindow system?

Answer 12

The graphical subsystem (e.g. GNOME, KDE, etc.)

Question 13

What is the BIOS used for?

Answer 13

Initializes the hardware and tests the main memory

Question 14

Where is the BIOS software stored?

Answer 14

On the motherboard

Question 15

What is the name of the testing process performed by the BIOS?

Answer 15

POST (Power On Self-Test)

Question 16

What is GRUB?

Answer 16

Linux Bootloader (Grand Unified Bootloader)

Question 17

Where is the MBR (Main Boot Record) stored?

Answer 17

On the hard disk, in the boot sector

Question 18

What does the initramfs filesystem image do?

Answer 18

It mounts the proper root filesystem

Question 19

How do you switch to text console on Linux?

Answer 19

Ctrl + Alt + FX

Question 20

What process starts all other processes on Linux?

Answer 20

systemd (replaced init and upstard)

Question 21

What command can be used to start, stop, enable, or disable processes?

Answer 21

systemctl start/stop/enable/disable process

Question 22

What is a partition?

Answer 22

A physically contiguous section of a disk

Question 23

Where are removable media located in the Linux filesystem?

Answer 23

/run/media/username/disklabel

Question 24

Where are essential user command binaries located in the Linux filesystem?

Answer 24

/bin/

Question 25

Where are device files located in the Linux filesystem?

Answer 25

/dev/

Question 26

Where are the bootloader's static files located in the Linux filesystem?

Answer 26

/boot/

Question 27

Where are the host-specific device configurations located in the Linux filesystem?

Answer 27

/etc/

Question 28

Where is the user's home directory located in the Linux filesystem?

Answer 28

/home/

Question 29

Where are the essential shared libraries and kernel modules located in the Linux filesystem?

Answer 29

/lib/

Question 30

Where are the add-on application software packages located in the Linux filesystem?

Answer 30

/opt/

Question 31

Where are the system binaries located in the Linux filesystem?

Answer 31

/sbin/

Question 32

Where can you find the data for the services provided by this host in the Linux filesystem?

Answer 32

/srv/

Question 33

Where are temporary files located in the Linux filesystem?

Answer 33

/tmp/

Question 34

Where are user utilities and apps located in the Linux filesystem?

Answer 34

/usr/

Question 35

Where are the variable files located in the Linux filesystem?

Answer 35

/var/

Question 36

What is the root user's home directory in the Linux filesystem?

Answer 36

/root/

Question 37

Where is the virtual filesystem documenting the kernel in the Linux filesystem?

Answer 37

/proc/

Question 38

Where are deleted files sent to in the Linux filesystem?

Answer 38

.local/share/Trash/files/

Question 39

What is the lower-level package manager in Ubuntu?

Answer 39

dpkg

Question 40

What is the higher-level package manager in Ubuntu?

Answer 40

apt

Question 41

What does the cat command do?

Answer 41

Print out the content of a file

Question 42

What does the head command do?

Answer 42

Print out the first few lines of a file

Question 43

What does the tail command do?

Answer 43

Print out the last few lines of a file

Question 44

What does | do?

Answer 44

Makes one program take as input the output of another

Question 45

What does the which command do?

Answer 45

Locate a program in the filesystem

Question 46

What does the pwd command do?

Answer 46

Prints the current directory

Question 47

What does the tree command do?

Answer 47

Gives a bird-eye view of directories

Question 48

What does the ln command do?

Answer 48

Creates a link between 2 files

Question 49

What does the less command do?

Answer 49

Show the content of larger files

Question 50

What does the touch command do?

Answer 50

Creates an empty file

Question 51

What are the 3 standard file streams?

Answer 51

0 input stdin (keyboard) 1 output stdout (terminal) 2 standard error stderr (log file)

Question 52

What does the grep command do?

Answer 52

Searches for strings in files

Question 53

What does the find command do?

Answer 53

Searches for files under the current directory

Question 54

How can you recognize a daemon process?

Answer 54

It ends with a "d" (ex: httpd)

Question 55

What process has a PID of 1?

Answer 55

init or systemd

Question 56

How do you kill a process?

Answer 56

kill -9 pid

Question 57

How do you run job in the background?

Answer 57

Add & after the command

Question 58

How do you terminate a foreground job?

Answer 58

Ctrl + C

Question 59

How do you suspend a foreground job?

Answer 59

Ctrl + Z

Question 60

How do you display background jobs and their PID?

Answer 60

jobs -l

Question 61

How do you display processes in the CLI?

Answer 61

ps

Question 62

How do you display running processes in real time?

Answer 62

top

Question 63

What determines process priority?

Answer 63

Niceness (-20 top priority, 19 lowest)

Question 64

How can you schedule tasks on Linux?

Answer 64

cron

Question 65

What utility is used to view partitions?

Answer 65

gparted

Question 66

What does cp do?

Answer 66

Copy

Question 67

What does mv do?

Answer 67

Move

Question 68

What does gedit do?

Answer 68

Open a text editor

Question 69

What does whoami do?

Answer 69

Identify the current user

Question 70

What does who do?

Answer 70

Lists the users currently logged on

Question 71

How do you add a new user on the Linux CLI?

Answer 71

sudo useradd name

Question 72

How do you remove a user in the Linux CLI?

Answer 72

userdel name