04 Permissions

Question 1

What are the three (3) group permissions?

Answer 1

Owner
Group
All Users

Question 2

What are the three (3) permission types?

Answer 2

Read
Write
Execute

Question 3

Permission type that allows the user to view the contents of the file.

Answer 3

Read

Question 4

Permission type that allows the user to modify a file or directory.

Answer 4

Write

Question 5

Permission type that allows the user to run a file or view the contents of a directory.

Answer 5

Execute

Question 6

What are the permission commands? (8)

Answer 6

id
chmod
umask
su
sudo
chown
chgrp
passwd

Question 7

Permission command that displays user identity.

Answer 7

id

Question 8

Permission command that allows you to modify the access rights of a file/directory.

Answer 8

chmod

Question 9

Permission command that sets the default file permissions.

Answer 9

umask

Question 10

Permission command that allows you to temporarily become the superuser.

Answer 10

su

Question 11

Permission command that allows you to execute a command as another user.

Answer 11

sudo

Question 12

Permission command that allows you to change a file’s ownership.

Answer 12

chown

Question 13

Permission command that allows you to change a file’s group ownership.

Answer 13

chgrp

Question 14

Permission command that allows you to change a user’s password.

Answer 14

passwd

Question 15

What are the attributes for common file types?

Answer 15

-
d
l
c
b

Question 16

Attribute that represents a regular file type.

Answer 16

-

Question 17

Attribute that represents a directory type.

Answer 17

d

Question 18

Attribute that represents a symbolic link.

Answer 18

l

Question 19

Attribute that represents a character special file type.

Answer 19

c

Question 20

Attribute that represents a block special file type.

Answer 20

b

Question 21

This file type refers to a device that handles data as a stream of bytes, such as terminal or modem.

Answer 21

Character special file

Question 22

This file type refers to a device that handles data in blocks, such as hard-drive or CD-ROM.

Answer 22

Block special file

Question 23

What is the file permission value if it sets no restriction on permissions and anybody can do anything?

Answer 23

777 (rwxrwxrwx)

Question 24

What is the file permission value if the file’s owner may read, write, and execute the file; all other may read and execute the file?

Answer 24

755 (rwxr-xr-x)

Question 25

What is the file permission value if the file's owner may read, write, and execute the file but the others are not given any rights?

Answer 25

700 (rwx------)

Question 26

What is the file permission value if all users may read or modify the file?

Answer 26

666 (rw-rw-rw-)

Question 27

What is the file permission value if the owner may read and modify the file, while all others only read the file?

Answer 27

644 (rw-r--r--)

Question 28

What is the file permission value if the owner may read and modify the file but all others have not rights? Ideals for data files that want to be kept private.

Answer 28

600 (rw-------)

Question 29

What is the directory permission value if there are no set restrictions and anybody may list files, create new files in the directory, and delete files in the directory?

Answer 29

777 (rwxrwxrwx)

Question 30

What is the directory permission value if the directory owner has full access, but all others may only list and not create files nor delete them?

Answer 30

755 (rwxr-xr-x)

Question 31

What is the directory permission value if only the owner has full access?

Answer 31

700 (rwxrwxrwx)

Question 32

What is the symbol used for the directory or file owner?

Answer 32

u

Question 33

What is the symbol used for the group owner?

Answer 33

g

Question 34

What is the symbol used for others?

Answer 34

o

Question 35

What is the symbol used for the combination of u, g, and o?

Answer 35

a

Question 36

What is the symbolic notation that allows to execute permission for the owner?

Answer 36

u+x

Question 37

What is the symbolic notation that removes the execute permission from the owner?

Answer 37

u-x

Question 38

What is the symbolic notation that allows execute permission for the owner, group, and everyone else?

Answer 38

+x

Question 39

What is the symbolic notation that removes the read and write permission from anyone besides the owner and group owner?

Answer 39

o-rw

Question 40

What is the symbolic notation that sets the group owner and anyone besides the owner to have read and write permission?

Answer 40

go=rw

Question 41

What is the symbolic notation that add execute permission for the owner and sets the permission for the group and others to read and execute?

Answer 41

u+x, go=rw

Question 42

chown argument that results in the ownership of the file is changed from its current owner to user "nika."

Answer 42

nika

Question 43

chown argument that results in the ownership of the file is changed from its current owner to user "nika" and from its current group owner to group "users".

Answer 43

nika:users

Question 44

chown argument that results in the ownership of the file is changed from its current group owner to group "admins".

Answer 44

:admins

Question 45

chown argument that results in the ownership of the file is changed from its current owner to user "nika." The group owner is the login group of user "nika" too.

Answer 45

nika: