Do Project 1 - UNIX Shell in textbook Chapter 3's Programming Projects Section. The project must be written in C. Your program must compile and run on pyrite. Requirements makefile (5 points) You get 5 points for using a makefile. Name your source files whatever you like. Please name your executable osh. Be sure that make" will build your executable. Documentation (10 points) If you have more than one source file, then you must submit a Readme file containing a brief explanation of the functionality of each source file. Each source file must also be well-documented. There should be a paragraph or so at the beginning of each source file describing the code; functions and data structures should also be explained. Basically, another programmer should be able to understand your code from the comments. Main Loop (10 points) The structure of the main loop is given in the project description. You program should terminate when the user types the command "stop" Executing Command in a Child Process (20 points) A "foreground job" is a command of the form ARGO ARG1... ARGn. Examples: cp file1 file2 cp-R diri dir2 rm-f-R diri dir2 file1 file2 A foreground job should be executed as follows: 1. Create a new process using fork() 2. Replace the image of the created process with the desired command using execvp(). 3. Wait for the process to terminate using waitpid(). A "background job is a command of the form ARGO ARG1... ARGn&. Examples: cp file1 file2 & cp-R diri dir2 & Your shell does not need to support background jobs. That is you can assume that the user never adds an '&' at the end of a command. Providing a History Feature (15 points) See project description for details Redirecting Input and Output (20 points) See project description for details Communication via a Pipe (20 points) See project description for details Project Submission Put all your source files (including the makefile and the README file) in a folder. Then use command zip-r to create a zip file. For example, if your Net-ID is ksmith and project 1 is the name of the folder that contains all your source files, then you will type zip-r ksmith project to create a file named ksmith.zip and then submit this file. Do Project 1 - UNIX Shell in textbook Chapter 3's Programming Projects Section. The project must be written in C. Your program must compile and run on pyrite. Requirements makefile (5 points) You get 5 points for using a makefile. Name your source files whatever you like. Please name your executable osh. Be sure that make" will build your executable. Documentation (10 points) If you have more than one source file, then you must submit a Readme file containing a brief explanation of the functionality of each source file. Each source file must also be well-documented. There should be a paragraph or so at the beginning of each source file describing the code; functions and data structures should also be explained. Basically, another programmer should be able to understand your code from the comments. Main Loop (10 points) The structure of the main loop is given in the project description. You program should terminate when the user types the command "stop" Executing Command in a Child Process (20 points) A "foreground job" is a command of the form ARGO ARG1... ARGn. Examples: cp file1 file2 cp-R diri dir2 rm-f-R diri dir2 file1 file2 A foreground job should be executed as follows: 1. Create a new process using fork() 2. Replace the image of the created process with the desired command using execvp(). 3. Wait for the process to terminate using waitpid(). A "background job is a command of the form ARGO ARG1... ARGn&. Examples: cp file1 file2 & cp-R diri dir2 & Your shell does not need to support background jobs. That is you can assume that the user never adds an '&' at the end of a command. Providing a History Feature (15 points) See project description for details Redirecting Input and Output (20 points) See project description for details Communication via a Pipe (20 points) See project description for details Project Submission Put all your source files (including the makefile and the README file) in a folder. Then use command zip-r to create a zip file. For example, if your Net-ID is ksmith and project 1 is the name of the folder that contains all your source files, then you will type zip-r ksmith project to create a file named ksmith.zip and then submit this file