ch1+2. Intro and Basic Tasks

Question 1

What shell does the course focus on?

Answer 1

Bash Shell

Question 2

What does Bash stand for?

Answer 2

Bourne Again Shell

Question 3

What are the parts of a Bash shell command?

Answer 3

Command, Options, Argument

Question 4

Is the linux CLI case sensitive?

Answer 4

Yes

Question 5

VIM

Answer 5

Linux pre-installed text editor

Question 6

VIM insert command

Answer 6

-i

Question 7

VIM command to exit ‘insert’

Answer 7

esc

Question 8

VIM command to save and exit

Answer 8

‘:wq’

Question 9

What key to auto-complete commands?

Answer 9

tab

Question 10

What does bold text in a command manual signify?

Answer 10

Type exactly as shown

Question 11

What does italic text in a command manual signify?

Answer 11

Replace with appropriate argument.

Question 12

What are ’-abc’ ?

Answer 12

Options

Question 13

What are ‘-a|-b’ ?

Answer 13

Either/Or options

Question 14

What does ‘man -a [command]’ do?

Answer 14

Finds matching queries inside the manual of the command.

Question 15

What does ‘man -D command’ do?

Answer 15

Prints debugging information on the command.

Question 16

What does ‘man -f [command]’ do?

Answer 16

Short command description.

Question 17

What does ‘man -h [command]’ do?

Answer 17

Prints help options.

Question 18

What does:

man -k .

do?

Answer 18

Prints all manual pages where ‘.’ is a regex for any character. You could also search for other strings.

Question 19

Key to reach the top of a man page?

Answer 19

Home key

Question 20

Key to reach the bottom of a man page?

Answer 20

End key

Question 21

Keys to move up or down on a man page?

Answer 21

Page up - Page down

Question 22

In a man page, what key can begin a search?

Answer 22

/ or a forward slash

Question 23

In a search of a man page, what key can move to the next occurrence of the search?

Answer 23

n

Question 24

In a search of a man page, what key can navigate to the previous occurrence of the search string?

Answer 24

‘p’

Question 25

In a man page, what key can quit out of the man page?

Answer 25

‘q’

Question 26

In what directory can you find documentation on all libraries, sys utilities, and software packages?

Answer 26

/usr/share/doc

Question 27

What is the grep command used for?

Answer 27

Search a file for a string

Question 28

What does ‘grep -i dingo’ do?

Answer 28

Searches the opened file for ‘dingo’ without regard for case.

Question 29

What does the ‘echo’ command do?

Answer 29

It repeats a string as output.

Question 30

What does the ‘ls’ command do?

Answer 30

It prints the contents of the present working directory.

Question 31

What does the ‘cp’ command do?

Answer 31

Copies a file, and can save the copy to a new location.

Question 32

What does the ‘cd’ command do?

Answer 32

It stands for ‘change directory’ and it can accept both relative and absolute file paths as arguments.

Question 33

What does the ‘clear’ command do?

Answer 33

Clears the output of the terminal.

Question 34

What does the ‘cat’ command do?

Answer 34

Prints the contents of a file.

Question 35

What does the ‘less’ command do?

Answer 35

Prints the file, page by page. Exit the file with the ‘q’ key.

Question 36

What does the ‘sudo’ command do?

Answer 36

‘super user do’ forces the terminal to execute the rest of the command as root. Depending on your user profile and privileges, the terminal may prompt you for the root password.

Question 37

What does the ‘history’ command do?

Answer 37

Prints a list of the previous commands run.

Question 38

What does the ‘ls -al’ command do?

Answer 38

‘-a’ shows hidden files
‘-l’ stands for ‘long’ and prints more information.

Question 39

What does the ‘touch’ command do?

Answer 39

Creates a file of any type.

Question 40

What does the ‘su - root’ or ‘su - ‘ command do?

Answer 40

Changes user to root after prompting for root password.

Question 41

What does the ‘apropos compress’ command do?

Answer 41

It returns all commands where ‘compress’ appears in the manual for the command.

Question 42

What does the command ‘whatis [command]’ do?

Answer 42

Prints a brief description of the given command.