Working with kernel modules

Question 1

is the core framework of the operating system typically known as the GNU/Linux operating system

Answer 1

Linux kernel

Question 2

portion pertains to all of the tools
such as your bash commands, your different types of shells,
and other utilities that you can use on the system.

Answer 2

GNU

Question 3

The side of that title pertains to the Linux kernel itself that provides a way for the rest of the system to operate with its hardware that’s connected to it, all the memories such as the hard disk and the RAM that’s plugged into the system, the networking capabilities of the computer, and of course itself, and what we mean by itself is the kernel’s ability to communicate with these various subsystems.

Answer 3

Linux

Question 4

The Linux kernel known as a

Answer 4

monolithic kernel.

Question 5

monolithic kernel.

Answer 5

it handles all memory management and hardware device interactions by itself. Also, extra functionality can be loaded and unloaded dynamically through kernel modules and it ensures that the system will not need to be rebooted into a different kernel image for added functionality.

Question 6

if you need to bring in a new driver you dont need to reboot the whole system

Answer 6

just use the driver

Question 7

The monolithic kernel has the ability

Answer 7

to dynamically load and unload new kernel drivers.

Question 8

In your line of work as a Linux systems administrator,

Answer 8

most often, when you deal with kernel modules, they’re going to be third-party drivers that come from other companies.

Question 9

to get some basic information about our kernel that we are currently running and by itself, it just shows us that we are running Linux,which makes sense because this is a Linux operating system.

Answer 9

uname command

Question 10

we can see that we are running a 64-bit kernel on this computer.

Answer 10

uname -m

Question 11

uname-a

Answer 11

option to print out all of the system information about our current Linux kernel. And here, we can see the operating system, the hostname of the server, the kernel release version,
the build time of the kernel, the machine architecture, the CPU type, and the operating system label itself.

Question 12

let’s take a look at the kernel modules that are loaded with our kernel. And here, we can see every kernel module that is currently in use on our computer. Over on the left we have the name of the kernel module itself, size of how much memory that kernel module is using followed by another column that lists out all of the other kernel modules that the kernel module on the left is being used by.

Answer 12

lsmod

Question 13

parport kernel module is being used by 2 other kernel modules,

Answer 13

the ppdev kernel module and the parport_pc module.

Question 14

We can get some further information about a particular kernel module

Answer 14

modinfo command

Question 15

We can also remove a kernel module

Answer 15

modprobe command

Question 16

unload a kernel module, we use the modprobe command, followed by the -r to remove the kernel module and then the name of the kernel module itself.

Answer 16

modprobe -r

Question 17

if your remove a kernel module and want to add the kernel module back, all we have to do is “?” . What this command will do is load the kernel module for us along with any other kernel modules that are dependent upon this kernel module itself.

Answer 17

run the modprobe command again and then the name of the kernel module

Question 18

kernel module that actually is used by your kernel to know how to work with your computer’s file system.

Answer 18

XFS