Welcome! This Syllabus for CS344, Operating Systems I, describes the materials, objectives, and the course policies that I expect us all to adhere to. For everything else, please refer to our course Home Page. It's required that you understand and know the information contained both on this Syllabus and our Home Page.
Yer gonna love it! In this course we will be learning about scripting and how it connects user programs and OS utilities together, communicating with the Operating System via system calls and utilities, creating and managing multiple processes at once, and inter-process communication, including networking. We will use UNIX as our model OS. By the end of the course, you should be able to:
- Explain why multiprogramming is important for modern operating systems.
- Explain the general structure of a multiprogrammed operating system.
- Explain the purpose and operation of system calls.
- Write a program utilizing system calls.
- Write a program using a scripting language.
- Explain how to use regular expressions to parse input data.
- Write a program that spawns processes and provides mutual exclusion for variables or other resources shared by the processes.
- Write a program that uses sockets to implement a client/server system.
- Explain how a common file system works, including structure, I/O operations, and security.
- Describe the memory organization of a typical process in a common operating system.
You will be using UNIX and C extensively in this course, though C will be reviewed; I expect that you have some experience programming, compiling, and using C and its libraries.
About the Instructor
About the Secondary Instructor (Nauman Chaudhry)
Course Materials & Schedule
The course material is presented over the course of four Blocks, the culmination of each being a specific, detailed programming assignment geared towards the material covered. Our required material includes videos and articles, all written by the Instructor.
In lieu of a week-by-week schedule, please use the assignment list found at the bottom of this Syllabus: it lists the due dates of the five assignments, the Syllabus Quiz, and the Final.
Please see our Home Page for links to the material.
Here are a couple of good books which are entirely optional (we require neither homework nor readings from these):
William E. Shotts, Jr., The Linux Command Line 13.07, LinuxCommand.org (free download!)
Michael Kerrisk, The Linux Programming Interface (TLPI), No Starch Press, 2010, ISBN: 978-1-59327-220-3
There are five programming assignments in this course: four complex, and one simple. The programming assignments must be completed on our class server (see the Home Page for more) and then submitted to Canvas.
When you submit the programming assignments to Canvas, don't be alarmed that Canvas renames the files. This is just normal Canvas behavior. We have to rename them anyway, so don't worry about it.
I highly recommend that you read the programming assignment for each Block when it becomes available. Start the assignments immediately - they will take time to accomplish. I promise they're interesting! When submitting assignments, please be aware that neither the Instructor nor the TA(s) are alerted to comments added to the text boxes in Canvas that are alongside your assignment submissions, and they may not be seen. No notifications (email or otherwise) are sent out when these comments are added, so we aren't aware that you have added content! If you need to make a meta-comment about a submission, please include it in the submission .zip file itself, or email the person directly who will be grading it (see the Home page for grading responsibilities).
You must use only our class server, as described on the Home Page, to test your programs and homework for this course. You may of course use your own computer to do development work on, but everything must compile and be runnable on the course server to earn points. More importantly, do not use other OSU servers to run our class assignments on, as much of our software will crash the server; this is why we have been given our own machine! If you fail to heed this requirement, running our software on a non-class server will hurt your grade!
Many of the assignments will be using grading scripts provided to you, and all have a set of specifications given that you must adhere to to both learn the material and earn the points possible. To assign grades to your submissions, the graders will be following a set of grading instructions (that you'll have access to). Note that the graders may run additional tests not communicated beforehand to verify that your program is adhering to the specifications, though nothing will be added to the specification. For example, if a grader suspects that a submitted program has been written in such a way that it passes a listed grading test, but does not adhere to the specification, then an additional test is likely to be run. However, any additional test done shall be easily justified as checking that the program adheres to the specification. The amount of points to be awarded or taken away by these additional tests is at the discretion of the grader.
Any crashes, hangs, errors, infinite loops, etc. not covered in the grading instructions and/or grading scripts will cause your program to lose points. The amount lost depends on the severity, how much it affects the rest of the program, and how it is recovered from, if at all, all based on the discretion of the grader.
If you have grading questions about the homework, you MUST contact your grading TA, as the TAs do ALL of the grading (except for the final, which is graded automatically by Canvas). You can see the contact information for our TAs on our Home Page.
If you believe a grade returned to you is incorrect, please submit proof to your grading TA within 48 hours of the grade being received by you. Your proof must consist of screenshots (not a copy/paste of the text) that clearly show you being in bash, on os1, and executing the grading method as proscribed. Your screenshots must show the places where the grading has been done incorrect, if any, and this grading must be done on the submission that you have made (i.e. redownload it yourself from Canvas to make these screenshots). If you don't provide proof, or if you ask for a regrade past 48 hours of the grade being given, a regrade won't be done.
We do not use any sort of proctoring for any assignment or test in this class.
All assignments must be submitted on Canvas, according to the posted due date and time, or they will be subject to penalties. All programming assignments that are submitted late by less than 24 hours will have 10% deducted from their grade (e.g. your program submitted at 12:01pm, if it was due at 12:00pm, will be worth 90% of its graded value). Programming assignments submitted late equal to or more than 24 hours, but less than 48 hours, will have 25% deducted from their grade. Programming assignments may not be submitted late past 48 hours, and will be worth 0 points. These late penalties are off of the total possible, not the amount you earn. For example, 10% off from Program 1 will always be -16 points, regardless of the points otherwise earned.
Note that Canvas has three types of dates in relation to Assignments: the "available" date, "due" date, and "available until" date. The due date is the date that the Assignment must be turned in by for full credit. The other "available" dates allow me to control when the Assignment can be accessed, which helps keep all of the students in the same place at the same time. The "available until" date is used to prevent submissions of Assignments past 48 hours; it is NOT the due date: it is after the due date.
To get an extension on an assignment, you'll need to have a major event occur in your life that will prevent you from timely completing your work, and you must then notify our Lead TA (listed on our Home Page) before hand, if possible. Extensions of these kinds are generally reserved for issues you can't control, such as medical reasons or family emergencies. Merely being busy does not count! If you cannot notify the Lead TA before the event occurs (sudden severe sickness, for example), then you must make contact as soon as possible to get an extension. We're fairly easy going about these, but you need to be upfront and immediate: don't wait!
There won't be a curve applied to the grading of this course, nor is there any rounding or weighting of assignments and/or the final. The points you see in the assignments are the points available, including in the table below. The grading scale is as follows, and will be adhered to strictly (I have already taken into account some pretty generous rounding), so please don't ask for "just a few more points":
91.5 ≤ A ≤ 100
89.5 ≤ A- < 91.5
87.5 ≤ B+ < 89.5
81.5 ≤ B < 87.5
79.5 ≤ B- < 81.5
77.5 ≤ C+ < 79.5
71.5 ≤ C < 77.5
69.5 ≤ C- < 71.5
67.5 ≤ D+ < 69.5
61.5 ≤ D < 67.5
59.5 ≤ D- < 61.5
0 ≤ F < 59.5
Note that when you take the final, you won't be able to see how you did on the individual questions and answers, nor will they be given afterwards. It'll simply give you a point grade, and that's it.
You must follow these rules and regulations while working on assignments at OSU and for this course.
I have no problems with you working together to solve problems, work through coding bugs, etc. However, I do require that final assignment and test answers be YOUR OWN WORK; do not complete the assignment as a group project.
You may not turn in work that has a substantial amount of someone else's program code, except for code that I give you. If you do submit such work anyway, your submission will be reported to the College of Engineering for disciplinary action, and a preliminary 0 grade will be entered in for that assignment, which grade will be finalized only when the College makes its ruling (which might not be for a few months).
We will automatically compare what you turn in against all other submissions, including this term, previous terms, other sections, and from online sources.
To be clear: do not download someone else's code, change it, and then submit it, even if you cite what you are doing. This constitutes cheating and your submission will be reported to the College of Engineering for academic dishonesty. Warning: we are very good at detecting cheating.
Really, this is a fun course. I do my best to be entertaining, and not overly boring. You'll find me easy to communicate with, and actively involved! The information we cover is fundamental to your education in computer science, and is actually pretty interesting. :)
If you're not having fun, you're doing it wrong!
Contacting People for Help
You can always contact the Instructor for any reason! However, in order to speed up communications, there are several people assisting with the smooth running of this course. You will be in contact with your grading TA, the Lead TA, and myself throughout the term.
My contact details are given below; the contact details for everyone else, along with additional discussion about this, is given on the Home Page.
You may also seek help from us, or fellow students, on our Piazza message board. Details on this are also on the Home Page.
Instructor Contact Details
Office Hours Schedule
Office hours will be held on Slack. The office hour schedule and Slack details are given on the Home Page.
Accommodations for students with disabilities are determined and approved by Disability Access Services (DAS). If you, as a student, believe you are eligible for accommodations but have not obtained approval please contact DAS immediately at 541-737-4098 or at http://ds.oregonstate.edu. DAS notifies students and faculty members of approved academic accommodations and coordinates implementation of those accommodations. While not required, students and faculty members are encouraged to discuss details of the implementation of individual accommodations.
We use a number of tools in this course, from terminal connection programs, to automated grading scripts, to memory leak finders. These are described on the Home Page and in the material as we go.
The syllabus page shows a table-oriented view of the course schedule, and the basics of course grading. You can add any other comments, notes, or thoughts you have about the course structure, course policies or anything else.
To add some comments, click the "Edit" link at the top.