main.c

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#define __STDC_WANT_LIB_EXT1__ 1
#include <errno.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/io.h>
 
uint32_t main(uint32_t argc, char** argv)
{
    if (argc != 3)
    {
        fprintf(stderr, "Usage: %s <source> <destination>\n", argv[0]);
        return EXIT_FAILURE;
    }
 
    if (rename(argv[1], argv[2]) == EOF)
    {
        fprintf(stderr, "mv: failed to rename file (%s)\n", strerror(errno));
        return EXIT_FAILURE;
    }
 
    return EXIT_SUCCESS;
}