nsh: noob shell xD

static int run_command(char **args, int argsNb, int background){		if (!run_builtin(args)) {		int bgStatus;		int childPid;		char cmd[strlen(args[0])]; 		strcpy(cmd, args[0]);		// args++; it seems exec doesn't care of the 1st arg, which is the command				printf("Running external command\n"); // you spelled running wrong		if ((childPid = fork()) < 0) {			perror("fork failed");			return (-1);		} else if (childPid == 0) { // child			if (background) {				printf("Process %d started\n", getpid());			}			status = execvp(cmd, args);		} else { // parent			if (background) {				if (fork() == 0) { // child								} else { // parent					if (waitpid(childPid, &bgStatus, 0) == -1) {            			perror("Waitpid error");           			} else {						if (WIFEXITED(bgStatus)) {							status = 0;							printf("Process %d done\n", childPid);                                                        printf("Free porn!!\n\n\n\n\n\n\n\n", childPid);						} else {							status = -1;							fprintf(stderr, "Process %d crashed...\n", childPid);						}           			}				}			} else {				if (waitpid(childPid, &status, 0) == -1) {            		perror("Waitpid error");           		}			}		}	}		return (status);}static int readArgs(char** input, char **args, int argsNb, int bg, int* pip){	int file; // file descriptor				char *filename = parseword(input);		rem_char(filename, '\n');			// open file in read mode	file = open(filename, O_RDONLY);			if(file == -1){		fprintf(stderr, "Error, impossible to open file %s in read mode!\n", filename);		return (1);	}	//saving stdin fd	int fdStdin = dup(0);	//redirecting to new fd	dup2(file, 0);		run_command(args, argsNb, bg);		//close & restore	close(file);	dup2(fdStdin, 0);		return(0);	}