dup2(fd,0);

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>

int pid=0;
int sys_call_response=0;
int my_pipe[2];
int fd=0;


int main()
{
        char input_file[20];
        scanf("%s", input_file);
        fd =open(input_file, O_CREAT | O_RDWR, 0666);
        char *arguments[3] = {"grep","model name",NULL};
        pid = fork();

        if(pid==0)
        {
                dup2(fd,1);
                sys_call_response = execvp(arguments[0], arguments);
                exit(0);
        }

        else wait(NULL);
        return 0;
}

public class Position {
	
	public int row;
	public int col;
	
}

//THIS METHOD JUST STORES IN THE ARRAYLIST THE POSITIONS OF THE SHOOT(complete/just how to add to the arraylist)
		public static ArrayList<Position> getTrajectoryToTop(char [][] board, Position shootPosition, int DIR){
			
			
			
			[b]ArrayList<Position> list = new ArrayList() ; 
			//THIS PART IS IN CHARGED OF (DEPENDING ON THE DIRECTION) FULLFILL ALL THE TRAJECTORY OF THE BUBBLE
			Position  c = new Position();[/b]
			
			
			int fic=0;
			
			int desplazamiento = 0; //This will indicate if it is going to the right or to the left
			
			if((DIR<=4 && DIR>0) || DIR==5){
				fic=1;
			}else if((DIR<0 && DIR>=-4) || DIR==-5){
				fic=-1;
			}
					
			int fic_counter = fic;
	           
			
			//ALL THESE LOOPS ARE FOR GETTING THE POSISITIONS INTO THE -ARRAYLIST- AND TO KNOW WHEN IT HAS TO STOP
			switch(DIR){
			//THIS IS FOR STRIGHT SHOOT
			case  0: for(int i=13; i>=1; i--){
				if(board[i][4]!=' '){
					break;
				}
				
	                        list.add(i,4); //THIS SHOULD BE A POSTION BUT HOW?¿?¿?¿
					} break;
					
			default :{
				
				//THIS IFS ARE FOR GETTING IF THE TRAJECTORY IS GOING TO THE LEFT OR THE RIGHT
				    if(DIR<4){
				    	desplazamiento=-1;      //Because it moves to the left
				    }else if(DIR<4){
				    	desplazamiento=1;
				    }
				    
				    
				    int initial_col = 4 + (DIR);
			        for(int i=13; i>=1; i--){
			        	if(initial_col>0 && initial_col<8){
			        		if(desplazamiento==1){
			        			if(board[i+1][initial_col+1]!=' '){
			        				break;}
			        		}else if(desplazamiento==-1){
			        			if(board[i+1][initial_col-1]!=' '){
			        				break;
			        			}
			        		}
			
			        		
			        	}else if(initial_col==0 || initial_col==8){
			        		if(board[i+1][initial_col]!=' '){
			        			break;
			        		}
			        		fic_counter=fic_counter*(-1);
			        		desplazamiento=desplazamiento*(-1);
			        	}
			        	initial_col=initial_col+fic_counter;
			        	[b]list.add(i,initial_col); }[/b]
			        }
			 }
			
			
		return list;}