From 2d1e7239b7f762e3d630ed6db002ee38f7739615 Mon Sep 17 00:00:00 2001
From: borekon <alfonso@vivancos.eu>
Date: Mon, 23 Jan 2023 08:16:48 +0000
Subject: [PATCH] =?UTF-8?q?A=C3=B1adir=20'test=5Fdns.sh'?=
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---
 test_dns.sh | 58 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 test_dns.sh

diff --git a/test_dns.sh b/test_dns.sh
new file mode 100644
index 0000000..a0ec3bc
--- /dev/null
+++ b/test_dns.sh
@@ -0,0 +1,58 @@
+#!/usr/bin/env bash
+# execute testdns.sh
+command -v bc > /dev/null || { echo "bc was not found. Installing..."; sudo apt install -y bc; }
+{ command -v drill > /dev/null && dig=drill; } || { command -v dig > /dev/null && dig=dig; } || { echo "dig was not found. Installing..."; sudo apt install -y dnsutils; }
+NAMESERVERS=`cat /etc/resolv.conf | grep ^nameserver | cut -d " " -f 2 | sed 's/\(.*\)/&#&/'`
+PROVIDERS="
+1.1.1.1#cloudflare 
+4.2.2.1#level3 
+8.8.8.8#google 
+9.9.9.9#quad9 
+80.80.80.80#freenom 
+208.67.222.123#opendns 
+199.85.126.20#norton 
+185.228.168.168#cleanbrowsing 
+176.103.130.132#adguard 
+156.154.70.1#neustar 
+8.26.56.26#comodo
+192.168.1.1#192.168.1.1
+94.140.14.140#adguard
+77.88.8.8#yandex
+64.6.64.6#verisign
+130.59.31.248#switch-dns
+216.146.35.35#dyn-dns
+84.200.69.80#dns-watch
+193.58.251.251#sky-dns
+192.168.1.1#router
+192.168.1.247#pihole local
+"
+# Dominios test.
+DOMAINS2TEST="www.google.com amazon.com facebook.com www.youtube.com www.reddit.com wikipedia.org twitter.com gmail.com www.google.es whatsapp.com forocoches.es"
+totaldomains=0
+printf "%-18s" ""
+for d in $DOMAINS2TEST; do
+    totaldomains=$((totaldomains + 1))
+    printf "%-8s" "test$totaldomains"
+done
+printf "%-8s" "Average"
+echo ""
+for p in $NAMESERVERS $PROVIDERS; do
+    pip=${p%%#*}
+    pname=${p##*#}
+    ftime=0
+    printf "%-18s" "$pname"
+    for d in $DOMAINS2TEST; do
+        ttime=`$dig +tries=1 +time=2 +stats @$pip $d |grep "Query time:" | cut -d : -f 2- | cut -d " " -f 2`
+        if [ -z "$ttime" ]; then
+         #let's have time out be 1s = 1000ms
+         ttime=1000
+        elif [ "x$ttime" = "x0" ]; then
+         ttime=1
+     fi
+        printf "%-8s" "$ttime ms"
+        ftime=$((ftime + ttime))
+    done
+    avg=`bc -lq <<< "scale=2; $ftime/$totaldomains"`
+    echo "  $avg"
+done
+exit 0;