LPI Part 1

Question 1

/etc/passwd

Answer 1

A colon-separated file that contains details about users, such as username, UID, password, and GID

Question 2

/etc/shadow

Answer 2

Stores users passwords in encrypted format

Question 3

/tmp

Answer 3

Stores temporary files and can be safely deleted during a reboot

Question 4

/boot

Answer 4

Contains all of the installed kernels on your system and their needed drivers

Question 5

Hard Link

Answer 5

The link is between the filename and the actual data stored on the filesystem

Question 6

Symbolic Link (soft link)

Answer 6

A pointer to another file on the same or another filesystem; commonly referred to as a shortcut.

Question 7

CRTL + SHIFT + C

Answer 7

Allows copying highlighted text while working in the command line terminal

Question 8

which

Answer 8

Displays where executable files are within the system’s PATH

Question 9

man -f

Answer 9

Display a concise one-line description of the command

Question 10

man -k

Answer 10

Search for commands related to a given keyword

Question 11

route

Answer 11

Used to show/manipulate the IP routing table

Question 12

First Regular User UID

Answer 12

1000 and then increments from there

Question 13

File Descriptor Number for Standard In (STDIN)

Answer 13

0

Question 14

File Descriptor Number for Standard Out (STDOUT)

Answer 14

1

Question 15

>

Answer 15

Standard output

Question 15

«

Answer 15

Standard input that amends

Question 16

<

Answer 16

Standard input

Question 17

> >

Answer 17

Standard output that amends

Question 18

2>

Answer 18

Standard Error

Question 19

whereis

Answer 19

Used to find the location of source/binary file of a command and manuals sections for a specified file

Question 20

whatis

Answer 20

Used to get a one-line manual page description

Question 21

whois

Answer 21

A utility for retrieving information about a domain or an IP address

Question 22

UNIX device name for physical or virtual terminal connection

Answer 22

tty

Question 23

Network interface always exist in linux

Answer 23

eth0

Question 24

CD-ROM Filesystem

Answer 24

isofs

Question 25

ps

Answer 25

Displays system processes

Question 26

Root Group GID

Answer 26

0

Question 27

dmesg

Answer 27

Displays kernel-related messages retrieved from the kernel ring buffer

Question 28

id

Answer 28

Used to find out user and group names and numeric ID’s (UID or group ID) of the current user or any other user in the server

Question 29

Sticky Bit

Answer 29

Restricts who can delete files in a directory. When set, only the user that owns, the user that owns the directory, or the root user can delete files within the directory

Question 30

last

Answer 30

Displays the time of the last login of a given user

Question 31

history

Answer 31

Used to display and clear the command line history for a given user

Question 32

for loop syntax

Answer 32

for n in a b c;
do
echo $n
done