Computer Literacy Assignments

CSI 801

Lecture 1: Introductions and Basics

Learn these Unix Commands

cd	ls	mkdir	rmdir	pwd
cp	mv	rm
more	cat	head	tail
man	chmod

Use these Packages

mail/elm/pine

Netscape

Assignment 1

Due September 5, 1996

Create a homepage on the science.gmu.edu cluster.
The page should include links to the csi801 home page and to your group members homepages.
It should have your name and email address on it.
Send me an email when you have completed the assignment.
Gain familiarity with all the above Learn these Unix Commands and packages during this assignment.

Reading

Landau and Fink, pp. 1-35

Lecture 2: Algorithms and Data Structures

Learn these Unix Commands

cc	f77	cpp
gcc	g++
alias	path	source	.cshrc
redirecting io	piping	echo	env

Use these Packages

Emacs

Assignment 2

Due September 12, 1996

edit your .cshrc file and modify your path to include ~jwallin/bin/
source the .cshrc file to update your path
execute the command "ddog" and pipe the results into a file
create an alias in your .cshrc file for ddog called "mdog"
pipe the set of environmental variables into a file
cp the files ~jwallin/bin/test.c, ~jwallin/bin/test.f, ~jwallin/bin/test.cc into your directory
compile them with either the system or gnu compilers
execute the fortran and c++ codes, and pipe the results into a file
execute the compiled test.c code
using emacs, copy your .cshrc file, your ddog results, and the results of your compilations into an html file
call the html file "hw2.html" and place it in your public_html directory
add a link to your main html page with for this assignment
make sure the permissions are set so I can read them through the web!

Reading

Landau and Fink, pp. 36-59, 179-224

Lecture 3: Simulations

Learn these Unix Commands

date	echo	stty
df	du	ps	kill
tr	split	grep	cut	diff	cmp	wc

Assignment 3

Due September 19, 1996

copy the files "~jwallin/bin/superdog1" and "~jwallin/bin/superdog2" to your home directory
using the above Learn these Unix Commands, create a list of all the differences between the two files
what is the difference in length of the files
how may times does the html command "li" appear in each of these files?
pipe the results of a du, df, and date command into a file
write a one page html report detailing the differences between superdog1 and superdog2. Include the number of times "cout" appears in each file. Include the results of the du, df and date command.
move the html report into your public_html directory and make sure it is readable through the Web
the name of this report should be "hw3.html"
link this report to your main html page

Reading Assignment

Landau and Fink, pp. 60-64, 225-230

Lecture 4: Testing and Validation

Learn these Unix Commands

nslookup	ping	netstat
ftp	telnet
kermit	sx	sz	rx	rz
tar

Assignment 4

Due September 26, 1996

find the network IP address for xip.nrl.navy.mil
use the ping command to determine if the system is alive
using anonymous ftp, transfer the file "anotherdog.tar" from "galileo.gmu.edu". It will be in the "pub" directory
list the files in this tar file
untar this file, piping the results into a text file
make a tar file of your public_html directory, piping the results of the tar into a text file
use kermit, rx, rz, sx, or sz to upload and download files to your home computer. This is an optional exercise, but a useful one to learn for other classes and assignments.
Write a short one paragraph summary of the differences between the kermit (or rx, rz, sx, sz) and ftp. Keep it short, but summarize when you might each of these tools.
Take the IP address, the results of the ping command and the tar commands, and place them in an html file.
name the html file "hw4.html" and place it in your public_html directory with the permissions set correctly for web access.

Reading Assignment

Landau and Fink, pp. 65-97

Lecture 5: Numerical Methods

Learn these Unix Commands

Use these Packages

Programming Unix Scripts

Assignment 5

Due October 3 , 1996

use sed to execute a global change in this html file. Change all 1996 to 1997 using this command, and pipe it to a new html file.
use awk to print all lines of this html file that have the <li> command in them. Pipe the results of this to a file.
use the sort command to sort this html file into reverse alphabetical order based on the second word of each line. Pipe the result into an html file.
write the shell script which removes all object (*.o) and ~ (*~) files if they are more than 2 weeks old.
combine the results of the sed, the awk and the sort command with the script you have written for the shell script. Write a few lines describing which command string was used to create the output and what effect was on the file.
Name the results file "hw5.html" and place it in your public_html directory. Make sure it is accessible through the Web, and a link is on your home page.

Reading

Landau and Fink, pp. 225-240

Lecture 6: Software Engineering

Use these Packages

Perl

Assignment 6

Due October 17, 1996

Write a Perl program which creates 5 html files containing the time they were created. The files should be named hw6-1.html, hw6-2.html, hw6-3.html, hw6-4.html, and hw6-5.html. All files should have an internal html title with the files name and a header with a <h1> filename </h1> inside, along with the date the file was created. Set the permissions so these files can be accessed through the web inside the perl script. Copy the perl script into a file named "hw6.html" with a few comments about how these commands worked.

Lecture 7: Midterm Exam

No new assignment

Lecture 8: Software Engineering II

Assignment 7

Due October 24, 1996

Write a C function that accepts a floating point arguments x1 and x2, and an integer argument n and then uses SGI's GL to plot sin(x) versus x for x = x1 to x2 by (x2-x1)/n. Your routine should check to see that x2 is greater than x1 and "return gracefully" if it is not. Test your routine with two or three choices of input values. Use

     #include  
     #include  
     #include  
     #include "aux.h"

For information on GL, see the README file in /usr/people/4Dgifts/examples/glpg, and the examples in the various chapter subdirectories. There are man pages for the individual functions (not the auxiliary functions, but the others):

     man  glClearColor

To compile and link, use something like

     cc $1.c -lgl_s -lc_s -o $1

Please the code you have written into a file called "hw7.html", with a short description of the code's function. Be sure to put in at least a few lines of documentation explaining how the code works.

Lecture 9: ODE's

Assignment 8

Due October 31, 1996

Look in the local info area for info on the Paragon, timewarp.

Use the Paragon to do two toy C programs that are in 
   /usr/share/examples/c

1. Make and run the "Hello world" program.

2. Make and run the program to multiply two 8 by 8 matrices.

Use the Paragon to do a toy Fortran program in 
   /usr/share/examples/fortran/pi

3. Make and run the program to calculate pi.

Lecture 10: PDE's

Assignment 9

Due November 7, 1996

  
Use Maple or Mathematic on the NeXT.  
  
1.  Solve the second-order ODE   
         y'' + 3y' + 2y = exp(-x)  
      (y'' and y' indicate derivatives wrt x)  
  
      Now solve the same ODE with the initial conditions  
         y(0) = 1 and y'(0) = 0  
  
      Plot the solution to the IVP over the range (0,8)  
   
2.  Consider the 3 by 3 Toeplitz matrix with elements a, b, and c.  
      (That is the matrix that looks like this:  
         a b c  
         b a b  
         c b a)  
  
      Invert this matrix.  
  
      Using Maple's solve() on certain expressions in the symbolic 
      solution you obtained, determine conditions for which the matrix
      would be singular.    
      (Hint to reduce your typing: you can use such things as %1 or %2
      to represent certain things.)  
  
3. According to Maxwell-Boltzman theory, the probability density of
      the velocity of a gas molecule is proportional to  
         (m/(k*T))**(3/2) * exp(-(m*v**2)/(2*k*T)) * v**2,  
      where v is the velocity, T is the absolute temperature, m is the  
      molecular mass, and k is Boltzman's constant.  
  
      Determine the mode of this distribution (the point where it 
      achieves its maximum value -- the "most likely" velocity) by
      determining the critical points (points where the first
      derivative is 0) and finding one of those whose second
      derivative is ...(positive or negative?).  Your solution is
      called the rms velocity.   
  
4.  Produce a 3-d display of the "Sidney Opera House"; that is, plot the   
      function  
        
            sqrt{ Gamma(0.01+ |x|) * J_0(y) * J_1(y) },  
         
      over the ranges x:(-6,6) and y:(-3,3),   
      where $\Gamma$ is the gamma function and $J_i$ is the Bessel
      function of the first kind, of order $i$.  (Use ?Bessel and/or
      ?inifcns to get more info about these functions in Maple.  Use
      ?plot3d also.)   
  
      Link this image into your Web page for this class.