Section 6: Directories and files

Answer 1

multi users can use the same system.

Answer 2

General user and super user

Question 3

What is a superuser?

Answer 3

a superuser can access all parts of the system to execute admin tasks.

Question 4

What are home directories?

Answer 4

Each user ( incl superuser) has their own home directory to store their photos/ downloads, bookmarks etc..

Question 5

What are system directories?

Answer 5

Hold center config files and executable files. Can only be controlled by the super user.

Question 6

what does / represented in the file tree?

Answer 6

root directory

Question 7

What is mount and unmount?

Answer 7

Partitions and drives have to be mounted onto the tree in Linux, they do not have their own separate trees.

Question 8

Can you access unmounted partitions or devices?

Answer 8

Data from unmounted partition or device is inaccessible.

Question 9

What is important to not about naming conventions in Linux file system.

Answer 9

Linux file system names are case sensitive.

Question 10

Do files in Linux need extensions?

Answer 10

Files in Linux do not need to have file extensions, it only matter what the format it was saved as.

Question 11

How do you hidden files in Linux?

Answer 11

by putting . infront of the file name

Question 12

T/F: Only the owner and root user of a file or directory can grant access?

Answer 12

true

Question 13

What are the three type of permissions?

Answer 13

read, write and execute

Question 14

Where can you change access permissions for files?

Answer 14

shell or GUI file manager

Question 16

What does FHS stand for?

Answer 16

Filesystem Hierarchy Standard

Question 17

What does FHS mean?

Answer 17

Distinguishes between shareable and unshareable files, static and variable files.

Question 18

What are static files?

Answer 18

Static files can not be changed.

Question 19

What are variable files?

Answer 19

Files that can be changed by users

Question 20

What does ls- l show?

Answer 20

lists everything in the long view ( for example shows permissions)

Question 21

What is the difference between / and \

Answer 21

The second is the escape character for ‘quoting’ the first in the separator of directories when navigating the file system in the shell

Question 22

Absolute pathname

Answer 22

Files relative to the root directory /home/user/documents/test.txt

Question 23

What does ~ represents ?

Answer 23

tilde represent the home directory ~/test.txt

Question 24

What is the relative pathname?

Answer 24

It is relative to the current directory using two hidden subdirectory . parent directory and .. one directory above parent directory.

Question 25

What are scratch files?

Answer 25

Empty files to practice navigation

Question 26

What does cp command do?

Answer 26

copies files

Question 27

What is a hard link?

Answer 27

A duplicate directory entry where both entries point to the same file.

Question 28

How to use ln command?

Answer 28

ln > origin name > linkname

Question 29

What is the ln command?

Answer 29

a command to create links

Question 30

What is a symbolic link?

Answer 30

also known as a soft link, . A file that refers to another file by name. Refers you back to the original file

Question 31

How to create a soft link?

Answer 31

ln -s <origin></origin>

Question 32

What is a wildcard?

Answer 32

a symbol or set of symbols that stands in for other characters

Question 33

What does ‘?’ stand for as a wildcard?

Answer 33

It stands in for characters ex: b??l could be bowl, ball etc..

Question 34

What does the wildcard ‘*’ stand for?

Answer 34

match a set of characters or no characters at all b*l could be matched to bowl, bull, ball, bbll or brawl.

Question 35

What does the wildcard [] stand for?

Answer 35

match any character that is exposed inside the brackets ex: b[ao][lw]l match things like bowl, ball but not bull.

Question 36

Will BASH always be case sensitive ?

Answer 36

yes

Question 37

What does rmdir do?

Answer 37

deletes the directory but only if its empty

Question 38

How can you delete directories that have files in them?

Answer 38

rm -r <directoryname></directoryname>

Question 39

What is the stipulation when using the cp to copy a directory?

Answer 39

Must use -r ( recursive) or - a switches

Question 40

T/F Can you use hard links or directories?

Answer 40

False, only ln -s can be used to create symbolic links to a directory.