Introduction to Operating Systems

By Prof. Chester Rebeiro   |   IIT Madras
Learners enrolled: 6771
Operating systems (OS) provide the crucial interface between a computer's hardware and the applications that run on it. It allows us to write programs without bothering much about the hardware. It also ensures that the computer's resources such as its CPU, hard disk, and memory, are appropriately utilized. In this course, we dwell into how the OS manages to do all this in an efficient manner. This is an introductory course, for students with prior knowledge of computer organization. The course is based on an OS called xv6, which in many ways is similar to the Linux operating systems.

INTENDED AUDIENCE B.E./Msc (Computer Science)
PRE-REQUISITES Good knowledge of C, Computer Organization and Architecture, x86 Assembly level programming. 
Course Status : Completed
Course Type : Core
Duration : 8 weeks
Category :
  • Computer Science and Engineering
  • Systems
Credit Points : 2
Level : Undergraduate
Start Date : 26 Jul 2021
End Date : 17 Sep 2021
Enrollment Ends : 09 Aug 2021
Exam Date : 26 Sep 2021 IST

Note: This exam date is subjected to change based on seat availability. You can check final exam date on your hall ticket.

Page Visits

Course layout

Week 1 : Introduction
Week 2 : Memory Management 
Week 3 : Processes 
Week 4 : Interrupts and Context Switching
Week 5 : Scheduling
Week 6 : Synchronization
Week 7 : Deadlocks
Week 8 : Operating System Security

Books and references

  • ''xv6: a simple, Unix-like teaching operating system", Revision 8, by Russ Cox, Frans Kaashoek, Robert Morris
  • ''Operating System Concepts'', 8th edition, by Adraham Silberschatz, Pert B. Galvin, and Greg Gagne, Wiley-India edition
  • ''Modern Operating Systems'', 3rd edition, by Andrew S. Tanenbaum, PHI Learning Private Limited, New Delhi
  • The xv6 source code is available via git clone git://pdos.csail.mit.edu/xv6/xv6.git

Instructor bio

Prof. Chester Rebeiro

IIT Madras
Chester Rebeiro is an Assistant Professor at IIT Madras. He completed his PhD from IIT Kharagpur and a post-doc from Columbia University. His research interests are in cryptography, system security, especially hardware and operating system security.
(webpage : http://www.cse.iitm.ac.in/~chester/)

Course certificate

The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.
The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).
Date and Time of Exams: 26 September 2021 Morning session 9am to 12 noon; Afternoon Session 2pm to 5pm.
Registration url: Announcements will be made when the registration form is open for registrations.
The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published. If there are any changes, it will be mentioned then.
Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.


Average assignment score = 25% of average of best 6 assignments out of the total 8 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and IIT Madras .It will be e-verifiable at nptel.ac.in/noc.

Only the e-certificate will be made available. Hard copies will not be dispatched.

Once again, thanks for your interest in our online courses and certification. Happy learning.

- NPTEL team

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