30 lines
497 B
C
30 lines
497 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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int main(int argc, char *argv[])
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{
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size_t offset = 0;
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if (argc < 2) {
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fprintf(stderr, "Usage: %s <filename>\n", argv[0]);
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return 1;
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}
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if (argc > 2) {
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offset = atoi(argv[2]);
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}
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FILE *fp = fopen(argv[1], "rb");
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if (!fp) {
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perror("fopen");
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return 1;
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}
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if (fseek(fp, offset, SEEK_SET) < 0) {
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perror("fseek");
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fclose(fp);
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return 1;
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}
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uint64_t buf;
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fread(&buf, 1, 8, fp);
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printf("0x%016lx\n", buf);
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fclose(fp);
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}
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