From dc4a93b34ab91ee67dde95fe8c251009db51c5c9 Mon Sep 17 00:00:00 2001
From: Joel Grunbaum <joelgrun@gmail.com>
Date: Wed, 21 Oct 2020 13:35:09 +0000
Subject: [PATCH] Added GPLv3 license
---
main.c | 13 ++++++++++---
1 files changed, 10 insertions(+), 3 deletions(-)
diff --git a/main.c b/main.c
index 5fb4cf2..edcc99d 100644
--- a/main.c
+++ b/main.c
@@ -30,13 +30,13 @@
int main(int argc, char** argv)
{
int option, added_hosts = 0;
- while((option = getopt(argc, argv, "s:h:t:n:")) != -1) {
+ while((option = getopt(argc, argv, "s:a:t:n:h")) != -1) {
switch (option) {
case 's': //server to use
add_dns_server(&servers, optarg);
num_servers++;
break;
- case 'h': //hostname to search
+ case 'a': //hostname to search
add_hosts_server(&hosts, optarg);
added_hosts++;
break;
@@ -47,8 +47,15 @@
num_tests = atoi(optarg);
break;
case '?':
+ case 'h':
default:
- printf("Error: invalid option -%c\n", optopt);
+ printf("Usage: %s [options]\n", argv[0]);
+ printf("Options:\n");
+ printf("\t-s <server>\tadd a DNS server to be tested\n");
+ printf("\t-a <hostname>\tadd a hostname to be tested\n");
+ printf("\t-t <number>\tspecify the number of hostnames to be tested, capped at 50 + number manually added\n\t\t\tdefaults to test all available\n");
+ printf("\t-n <number>\tspecify the number of tests to perform on each hostname\n\t\t\tdefaults to 10\n");
+ printf("\t-h\t\tShow this help\n");
free_dns_list(&servers);
free_hosts_list(&hosts);
exit(1);
--
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