2021_DKU_OS

This is a place for studying Operaing System in Dankook University.

• Professor : Jongmoo Choi
• Assistant : Hojin Shin (Email : ghwls03s@gmail.com)
• 2021 DKU Operating System Course Information link

Download Environment

Virtual Machine Platform: VirtualBox 6.1.18

VirtualBox Download Link

Windows Subsystem for Linux Install Guide (WSL)

WSL Install Guide Link

Operating System: Ubuntu 20.04

This environment is based on VirtualBox 6.1.18 If image execution is not possible, we recommend reinstalling VirtualBox 5.2 version.

Virtual Box 5.2 Link

Clone Git Repository

git clone https://github.com/DKU-EmbeddedSystem-Lab/2021_DKU_OS.git

If you get an error there are no commands, install git with following command :

sudo apt-get install git

Lab0

lab0 contains information about installing a virtual machine and Ubuntu.

Set the environment according to the documentation.

The documentation for lab0 is at the link below.

The OS image to use for preferences is also on the link below.

Documentation for conducting the assignment can be found at following link :

Lab0 Documentation Link

DKU OS Image Download Link Link

Root password : 1234

DKU OS Image rename : DKU_OS_2021 -> ubuntu 20.04

If you have an error, you must check VirtualBox version check(6.1.18). If not, you reinstall VirtualBox.

Lab1

If you want to proceed to Lab1, go to command below :

cd lab1_sched

make

./lab1_sched

Documentation for conducting the assignment can be found at following link :

Lab1 Documentation Link

Lab2

If you want to proceed to Lab2, go to command below :

cd lab2_sync

make all

./lab2_sync -c=100 -q=1

Usage for lab2_sync :

Usage for ./lab2_sync : 
    -c: Total number of vehicles produced, must be bigger than 0 ( e.g. 100 )
    -q: RoundRobin Time Quantum, must be bigger than 0 ( e.g. 1, 4 ) 

Example : 
    #sudo ./lab2_sync -c=100 -q=1 
    #sudo ./lab2_sync -c=10000 -q=4 

See the documentation for details.

Documentation for conducting the assignment can be found at following link :

Lab2 Documentation Link

Lab3

If you want for proceed to Lab3, go to command below :

cd lab3_filesystem

make

insmod ramdisk.ko

mkfs.ext2 /dev/ramdisk

mkdir mnt

mount /dev/ramdisk ./mnt

./create.sh

./apt mnt/A/BC 13 A/BC-13        //A, B, C is your last 3 digit of you student ID : 32XXXABC

Then you can proceed Lab3

If you want to proceed to Lab3-Bounus, go to command below:

umount /dev/ramdisk

rmmod ramdisk

insmod ramdisk.ko

cd os_ext2        //Change the source code

make

insmod os_ext2.ko

mkfs.ext2 /dev/ramdisk

mount -t os_ext /dev/ramdisk ../mnt

dmesg | grep os_ext2

See the documentation for details.

Lab3 Documentation Link