#include 
     
      #include 
      
        #define TRAN_SZIE 1024int copy_bin(char* from, char* to){    FILE *fin, *fout;    int size;    char buf[TRAN_SZIE]; if ((fin=fopen(from,"rb"))==NULL) {        perror("fopen filein");        exit(0);    } if ((fout=fopen(to,"wb"))==NULL) {        perror("fopen fileout");        exit(0);    }    while(!feof(fin)) {        size = fread(buf, 1, TRAN_SZIE, fin);        fwrite(buf, 1, size, fout);    }    fclose(fin);    fclose(fout); return 0;}int main(int argc, char * argv[]){    int ret = 0;    if (argc!=3) {        printf("Usage: %s filein fileout\n", argv[0]);        exit(0);    }    ret = copy_bin(argv[1], argv[2]);    return ret;}/*[root@localhost]# ./copy_bin IMG1.jpg IMG2.jpg [root@localhost]# diff IMG1.jpg IMG2.jpg */