#include <stdio.h>
#include <unistd.h>

#define MAX_LINE 80/*The maximum leught command */

int main(void)
{
char *args[MAX_LINE/2 + 1];command line arguments*/
int should_run = 1;/* flag to deterimine when to exit program*/

while (should_run){
	printf("osh>");
	fflush(stdout);

	//**
	*after reading user input, the steps are:
	* (1) fork a child  process using fork()
	* (2) the child rocess will invoke execvp()
	*/

	}
return 0;
}