pid_t cpid;

	    /* 
	     * fork and attempt to execute the command
	     */
	    cpid = fork();

	    switch(cpid)
	    {
		case -1: // oops
		{
		    printf("Unable to claim system resources.\n");
		    break;
		}
		case 0: // i am child process
		{
		    // call execvp to start the user's command
		    if( execvp(progArgsArray[0], progArgsArray) == -1 )
		    {
			switch(errno)
			{
			    case EACCES:
			    {
				printf("access is denied: %s\n", progArgsArray[0]);
				break;
			    }
			    case EPERM:
			    {
				printf("operation not permitted: %s\n", progArgsArray[0]);
				break;
			    }
			    case ENOEXEC:
			    {
				printf("ENOEXEC\n");
				break;
			    }
			    case ENOENT:
			    {
				printf("command not found: %s\n", progArgsArray[0]);
				break;
			    }
			    default:
			    {
				printf("Error code: %d\n", errno);
			    }
			}
		    }

		    _exit(0);
		    break;
		}
		default: // i am parent process
		{
		    int status;

		    /* // this code for background processes
		    if( cmdStr[strlen(cmdStr)] != '&' )
		    {
		    */
			waitpid(cpid, &status, 0);
		    /*
		    }
		    else
		    {
			printf("process id: %d\n", cpid);
		    }
		    */

		    /*
		     * this'll show exit status
		     
		    if( WIFEXITED(status) ) 
		    {
			printf("%d [%d] exited\n", WEXITSTATUS(status), cpid);
		    }
		    */
		    
		    // this'll have to be rewritten when fg/bg are implemented
		    for( i = 0; progArgsArray[i] != NULL; i++ )
		    {
			free(progArgsArray[i]);
			progArgsArray[i] = NULL;
		    }
		    break;
		}
	    }