Main

Question 1

Where are bootloader files stored?

Answer 1

/boot

Question 2

Where are configuration files stored?

Answer 2

/etc

Question 3

Where are users files stored?

Answer 3

/home

Question 4

What is root user home directory?

Answer 4

/root

Question 5

Where are removable media stored?

Answer 5

/media

Question 6

What is older place where removable media were stored?

Answer 6

/mnt

Question 7

Where are 3rd party apps stored?

Answer 7

/opt

Question 8

Where is variable data stored?

Answer 8

/var

Question 9

Where are Linux user program binaries stored?

Answer 9

/usr/bin

Question 10

Where are Linux admin program binaries stored?

Answer 10

/usr/sbin

Question 11

Where is local installation program data stored?

Answer 11

/usr/local

Question 12

How would you list only directory name?

Answer 12

ls -d

Question 13

What is a distribution?

Answer 13

Linux kernel (as base) + utility software

Question 14

What is a distribution?

Answer 14

Linux kernel (as base) + utility software

Question 15

What is FHS

Answer 15

Filesystem Hierarchy Standard

Question 16

How would you get the kernel information

Answer 16

uname -r

Question 17

How would you get kernel compilation datetime?

Answer 17

uname -v

Question 18

How would you print kernel name?

Answer 18

uname = uname -s

Question 19

What type of commands we can distinguish?

Answer 19

Built-in and external

Question 20

What program would you use to check whether a command is built-in or external?

Answer 20

type

Question 21

What programs will help you find and understand usage of commands? (4)

Answer 21

help | info | man | apropos

Question 22

If you print your command history. How would you execute n-th command?

Answer 22

!n

Question 23

What is the difference between history LIST and .bash_history

Answer 23

History LIST ‘lives’ inside’ memory, not storage. LIST contains all commands associated with current’s user session.

Question 24

In what section of man pages is command syntax described?

Answer 24

SYNOPSIS

Question 25

What command would you use to get information about built-in commands?

Answer 25

help

Question 26

What are the programs called pager utilities?

Answer 26

less and more

Question 27

Which program is more advanced? less or more

Answer 27

less

Question 28

How would you perform a forward and backward search in less program?

Answer 28

/ - forward search | ? - backward search

Question 29

Can more utility go backward?

Answer 29

Nope

Question 30

Which program would you use and with which parameter to look at the file in the real time?

Answer 30

tail -f

Question 31

How many lines do the head and tail programs print by default?

Answer 31

10

Question 32

What does the -F parameter means used with ls command?

Answer 32

Classify and print a file type.

Question 33

What does wc program print by default?

Answer 33

lines, word, bytes

Question 34

Which parameter allows you to show number of occurrences using uniq program?

Answer 34

-c

Question 35

How many times will duplicate appear using -d parameter?

Answer 35

Once

Question 36

Which parameter would you use to print all duplicates with uniq command?

Answer 36

-D

Question 37

Which program allows you to print file content with line numbers?

Answer 37

nl

Question 38

Does nl program counts empty new lines? (\n)

Answer 38

Nope

Question 39

How would you display two files side by side?

Answer 39

paste

Question 40

How would you part a file by a specified pattern?

Answer 40

split

Question 41

Which program would you use to change only one letter in a text file? And which to change patterns?

Answer 41

tr and sed :-)

Question 42

How would you display the second column separated by dot?

Answer 42

cud -d "." -f2 file.txt

Question 43

How would you turn off grep highlighting?

Answer 43

grep --color=never