Project 1: Implementing a Simple Shell

                      Assigned Wed Feb. 5

                        Due Wed Feb. 19

                            60 pts

                         Grading Notes


Early and late projects: 10% bonus for turning in a project
two days early (or earlier) 5% bonus for one day early; 5%
off for each day late.

20% (12 pts) of the grade is for documentation; 80% (48 pts)
is for working correctly

Students must describe their design and implementation at
the beginning of the project; this initial description is
worth 15% (9 pts) of the grade.  The description should be
about a half-page long, and should not simply echo the
specifications.


The points for working correctly are divided up as follows: 

 - 20% (12 pts) for simple commands,

 - 20% (12 pts) for working i/o redirection,

 - 20% (12 pts) for being able to successfully put a process 
   in the background, and

 - 20% (12 pts) for working pipes. 


The test shell script performs four tests:

 1.  (12 pts) simple commands

 2.  (6 pts)  input redirection 

 3.  (6 pts)  output redirection

 4.  (12 pts) pipe


Each of the above tests includes a background test;
successful background commands are worth 12 pts.

  -12 pts if the background commands in the first test fail

  -6 pts if the first test is successful, but one or more 
     other background test fails when the corresponding 
     forground test is ok