Linux test 2

Question 1

When looking at File system permission, who do each permissions belong too?
(3 groups/ 3 rights folders)

Answer 1

User who owns file, group who owns file, other (everyone else)
ex:
-rw-rw-r– (9bits)
(r-read, w-write, e-execute. D-directory, l-link)

Question 2

How do you change owner on a file

Answer 2

chown ‘user’ ‘/filename’
ex:
Sudo chown jdrost /data

Question 3

How do change group ownership?

Answer 3

chgrp ‘goupname ‘file/foldername’
ex:
Sudo chgrp projects /data

Question 4

How do you change ACL rights?

Answer 4

chmod 'aclvalue'
Read represented as 4
•Write represented as 2
•Execute represented as 1
ex:
sudo chmod 775
makes
rwx-rwx-r-x

Question 5

How do you add a user with another group, while remaining in the current group?

Answer 5

-aG

usermod -aG projects jdrost

Question 6

How to add user to a group?

Answer 6

usermod -G
ex:
usermod -G itadmins jdrost

Question 7

How to change password for a user?

Answer 7

passwd

ex: passwd jdrost

Question 8

How to can change password history options?

Answer 8

ls /etc/pam.d

Question 9

What is the field for user id: and encrypted password?

Answer 9

less /etc/shadow

Question 10

How do you list known partitions including disk?

Answer 10

-fdisk -l

Question 11

How do you look at the physical and logical volumes, and volume groups?

Answer 11

pvdisplay
lvdisplay
vgdisplay

Question 12

Sda1 is the _________ partition

Answer 12

bootable

Question 13

Sda2 is specified by the path for ______ volume management

Answer 13

logical

Question 14

What are the Group Management Command?

Answer 14

groupadd
groupmod
groupdel

Question 15

Disks are recognized as _____ _____ system object

Answer 15

block file

Question 16

What is the path to disk device?

Answer 16

/dev/sdx

- x starts with a and increases for each additional disk

Question 17

Partitions are named sdxn: what is substituted for the n?

Answer 17

n starts at 1 and increases for each additional partition

Question 18

How do you display free disk on all volume?

Answer 18

df

Question 19

How do you display mounted volumes and their targets?

Answer 19

mount

Question 20

Logical volume management adds a layer of abstraction between disks/partitions and ______.

Answer 20

volumes

Question 21

Physical Volumes divides into ________ _______ -the size determined when creating it

Answer 21

Physical Extents (pe)

Question 22

You can use a disk or partition to create a?

Answer 22

Physical Volume

Usually consume entire disk

Question 23

How do you create pv’s, lv’s, vg’s

Answer 23

pvcreate
lvcreate
vgcreate

Question 24

What do you do after creating the logical volume?

Answer 24

create file system and mount

mount -t xfs /dev/vg/lv /file

Question 25

Use _____ and specify type to create file system on partition

Answer 25

mkfs

default is file system is xfs

Question 26

You can specify mount device in _____ via device path or UUID

Answer 26

/etc/fstab

Question 27

How do you create a disk ?

Answer 27

sd- scuzzy disk

Question 28

creating a logical volume?

Answer 28

Need: -L 5g myvg -n mylv

size, name, then name lv

Question 29

How to create a vg?

Answer 29

vgcreate myvg /dev/sb’_’