host查DNS

因為有個script查DNS是否正常連線

ispgoogle_dns.sh



#!/bin/sh

ispdns() {

    host -t ns hinet.net | awk '{print $NF}'

    host -t ns seed.net.tw | awk '{print $NF}'

    host -t ns giga.net.tw | awk '{print $NF}'

    host -t ns tfn.net.tw | awk '{print $NF}'

    host -t ns so-net.net.tw | awk '{print $NF}'

    host -t ns sparqnet.net | awk '{print $NF}'

}

for i in `ispdns`

do

    IP=`host $i | awk '/address/ {print $NF}'`

    if [ `host www.google.com.tw $i | grep -c address` = 3 ] ; then

        echo $i $IP OK

    else

        echo $i $IP failed

    fi

done









* net-dns/bind-tools

     Available versions:  9.4.1_p1 9.4.2_p2 ~9.4.3 ~9.5.0_p2

     Homepage:            http://www.isc.org/products/BIND/bind9.html

     Description:         bind tools: dig, nslookup, host, nsupdate, dnssec-keygen



會出現host commend not found

查了一下

emerge bind-tools