Chapter 1 - Getting Start w The Basics

Question 1

/root

Answer 1

The home directory of the root user

Question 2

/etc

Answer 2

Contains the Linux config files - files that control when and how programs start up

Question 3

/home

Answer 3

The user’s home directory

Question 4

/mnt

Answer 4

Where other filesystems are attached or mounted to the filesystem

Question 5

/media

Answer 5

Where CDs and USB devices are usually attached or mounted to the filesystem

Question 6

/bin

Answer 6

Where application binaries (the equivalent of executables in Microsoft Windows or applications in macOS) reside

Question 7

/lib

Answer 7

Where you’ll find libraries (shared programs that are similar to Windows DLLs)

Question 8

Command

Returns your location within the directory structure.

Answer 8

pwd

Question 9

Command

To move up one level in the file structure (towards the root)

Answer 9

cd ..

Question 10

Command

To move up two levels in the file structure (towards the root)

Answer 10

cd ../..

Question 11

Command

To move up three levels in the file structure (towards the root)

Answer 11

cd ../../..

Question 12

Command

Move up to the root level in the file structure

Answer 12

cd /

Question 13

Command

To get more information about the files and directories, such as their permissions, owner, size, and when they were last modified

Answer 13

ls -l

Question 14

Show hidden files

Answer 14

ls -a

Question 15

Three options for help?

Answer 15

-h
–help
-?

Question 16

Command for manual pages

Answer 16

man [command]

Question 17

How do you navigate MAN pages?

Answer 17

ENTER - scroll
Page Up/Down + Arrow keys
Quit - Q

Question 18

Command to go through entire filesystem and find every occurrence of a word

Answer 18

locate

Ex. locate aircrack-ng

Question 19

Command to locate a binary file, its source, and man page

Answer 19

whereis

Ex. whereis aircrack-ng

Question 20

Command to only return the location of the binaries in the PATH variable in Linux

Answer 20

which

Question 21

Command which begins your search in any designated directory and looking for a number of different parameters like name + date of creation

Answer 21

find

Question 22

Syntax for find

Answer 22

find directory options expressions

Ex. find / -type f -name apache2

Finds a file with the name apache2 starting from the root directory

Question 23

What separates find from other search commands?

Answer 23

Find displays only exact name matches

Must use wildcard like * . , ? []

Question 24

What is ? used for?

Answer 24

To replace a single character

Question 25

What is [] used for?

Answer 25

To match the characters the appear inside the square brackets

Question 26

What is * used for?

Answer 26

Matches ANY characters of ANY length

Question 27

Command to display info about processes running on the machine

Answer 27

ps

Question 28

Command used as a filter to search for keywords. Mostly used when output is piped from one command to another

Answer 28

grep

Question 29

Used to display contents of a file but to also create small files

Answer 29

cat

Question 30

Use cat command to create a file

Answer 30

cat > [name of file] then type in the contents here then type CTRL + D

Question 31

Command to append/add to file

Answer 31

Use cat >> [name of file]

Question 32

Command to overwrite what already exists in the file

Answer 32

cat > [name of file]

Question 33

Command to create a new file [if it doesn't already exist]

Answer 33

touch

Question 34

Command to create new directory in Linux

Answer 34

mkdir

Question 35

Command to create a duplicate of a file in the new location

Answer 35

cp [name of file] [directory of where to go] EX. cp oldfile /root/newdirectory/

Question 36

Command to create a duplicate of a file in the new location with a new name

Answer 36

cp [name of file] [directory of where to go]/newname EX. cp oldfile /root/newdirectory/newfile

Question 37

Command to move a file or directory to a new location

Answer 37

mv

Question 38

Command to rename a file

Answer 38

mv Ex. mv newfile newfile2 [Renames newfile to newfile2]

Question 39

Command to remove a file

Answer 39

rm

Question 40

Command to remove a directory

Answer 40

rmdir [name of directory]

Question 41

Command to remove directory even if it contains contents

Answer 41

rm -r [name of directory]