Useful CLI tools (bash) for Arch Linux administration
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#include <stdio.h>
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#include <stddef.h>
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#include <netdb.h>
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int main(int argc, char *argv[])
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{
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struct servent *se;
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if (argc != 3) {
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printf("%s usage: <protocol> [tcp|udp]\n", argv[0]);
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return 1;
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}
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if ((se = getservbyname(argv[1], argv[2])) == NULL) {
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return 1;
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} else {
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printf("%d\n", ntohs(se->s_port));
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}
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return 0;
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}
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