Project1 - CSSE 340 Operating Systems Project 1: Implement...

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CSSE 340 Operating Systems Project 1: Implement Unix Shell with History Feature Project Objectives: [1] Understand how a simple shell works. [2] Understand systems calls, such as fork, read, wait, execvp, and etc. [3] Understand signal handling mechanisms Project Descriptions: You will create a C program that provides the basic operations of a command line shell as described below. The shell interface provides the user a prompt after which the next command is entered. The examples below illustrate the prompt command> and the user’s commands. command>ls /* this will display the files and directories under current directory*/ command>cat proj1.c /* this will display the file proj1.c */ command>ctrl-c /* ctrl-c will display the 10 most recent commands you have run*/ #include <stdio.h> #include <unistd.h> #define MAX_LINE 80 /* 80 chars per line, per command, should be enough. */ /** * setup() reads in the next command line, separating it into distinct tokens * using whitespace as delimiters. setup() sets the args parameter as a * null-terminated string. */ void setup(char inputBuffer[], char *args[],int *background) { // you need to implement the function } int main(void) { char inputBuffer[MAX_LINE]; /* buffer to hold the command entered */
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This note was uploaded on 03/01/2011 for the course CSSE 250 taught by Professor Dr.yingwuzhu during the Spring '11 term at UH Clear Lake.

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Project1 - CSSE 340 Operating Systems Project 1: Implement...

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