cambiar.c

cambiar.c

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>


int main(int argc, char *argv[]){


	char *pref;

	char newn[255];

	int n, i;

	if(argc < 2){

		return EXIT_FAILURE;

	}

	if(argv[1][0] != '-'){

		pref = "old";

		n = 1;

	}else{

		pref = strdup(++argv[1]);

		n = 2;

	}

	//printf("%s", pref);


	while(argc > n){

		//printf("%s", argv[n]);	

		sprintf(newn, "%s.%s", argv[n], pref); //Por alguna razón esto no funciona
		
		/*

		//Esto es una chapuza

		for(i=0; i < sizeof(newn); i++){

			newn[i] = '\0';

		}

		strcat(newn, argv[n]);
		strcat(newn, ".");
		strcat(newn, pref);

		//Fin de la chapuza */

		if(rename(argv[n], newn) != -1){

			printf("%s\n", newn);

		}

		n++;

		//printf("%d", n);

	}

	return EXIT_SUCCESS;

}