38 lines
583 B
C
38 lines
583 B
C
#include <netdb.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "hstrerror.h"
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char *cmnd;
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void usage(void) {
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fprintf(stderr, "Usage: %s [hostname ...]\n", cmnd);
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exit(1);
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}
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int main(int argc, char **argv) {
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int i;
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int rc = 0;
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cmnd = argv[0];
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if (argc < 2) {
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usage();
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}
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for (i = 1; i < argc; i++) {
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struct hostent *he = gethostbyname(argv[i]);
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if (!he) {
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fprintf(stderr, "%s: cannot resolve %s: %s\n",
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argv[0], argv[i], hstrerror(h_errno));
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rc++;
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continue;
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}
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printf("%s\n", he->h_name);
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}
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return rc;
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}
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