[[Category:OPS535]][[Category:rchan]]
= Bash Script=
Sample Bash script for extracting Domain Registration wiki page [[Domainreg]] and create a root zone file.
Set the following shell (environment) variables before running the script to produce a customized zone file header for that root zone that match your DNS server:
* RNS_FQDN - set this to the fully qualified domain name of your root name server.
** <pre> export RNS_FQDN=rns.cp.net</pre>
* RNS_IP - set this to the IP address of your root name server.
* DNS_ADMIN_EMAIL - set this to the email address of your DNS administrator
** <pre> export DNS_ADMIN_EMAIL=admin.cp.net</pre>
<pre>
#!/bin/bash # Created by: Raymond Chan # for OPS535 # (c) 20102016 - update for new wiki site# (c) 2017 - update to prompt user to set the followings# fqdn,ip for root name server# email for dns admin# RNS_FQDN, RNS_IP, DNS_ADMIN_EMAILif [ -z "${RNS_FQDN}" ]then echo "Please set the shell variable RNS_FQDN to the FQDN of your" >&2 echo "root name server and run this script again." >&2 exit 1fi if [ -z "${RNS_IP}" ]then echo "Please set the shell variable RNS_IP to the IP address" >&2 echo "of your root name server and run this script again." >&2 exit 2fi if [ -z "${DNS_ADMIN_EMAIL}" ]then echo "Please set the shell variable DNS_ADMIN_EMAIL to the" >&2 echo "email address of your DNS administrator and run this" >&2 echo "script again." >&2 exit 3fi# start loading dns information from the web url=http://zenit.senecac.on.ca/wiki/index.php/Domainreg if [ ! -f raw.txt ] then echo "Gettting wiki file from the web ..." >&2 wget -O raw.txt $url fi buffer=$(cat raw.txt| grep ^'</td><td>') nl=$(echo "$buffer"|wc -l) a=0 b=5 while [ $a -lt $nl ] do stuff=$(echo "$buffer"| head -"$b" | tail -5|nl|sed -e "s/<\/td><td>/x/g") # echo "$stuff" fields=$(echo "$stuff"|sed -e "s/ //g"|awk -Fx {'print $2'})
parametersbuffer=$(echo $fields) paratest=$(echo $parameters cat raw.txt| sed -e "s/ //g"grep ^'<td>') cc=$(echo $paratest | wc -w) # echo "paratest cc is $cc"
if [ nl=$cc (echo "$buffer"|wc -gt l)a=0 ] then b=6 #generating the zone file headerSN=$(date +%y%j%H) # yydddHHecho "\$TTL 3600"echo "@ IN SOA $a {RNS_FQDN} ${DNS_ADMIN_EMAIL} ($parameters{SN} 1h 15m 30d 1h)" #read yyy echo " IN NS ${RNS_FQDN}" set echo "${RNS_FQDN} IN A $parameters{RNS_IP}"
if while [ "$1" !a -lt $nl ]do stuff= $(echo "$buffer" | head -a "$3b" != | tail -5|nl|sed -e "s/<td>/x/g" -a ) # echo "$4stuff" ! fields= $(echo "$stuff" ] then|sed -e "s/ //g"|awk -Fx {'print $2'})
parameters=$(echo -e "${1}. \tIN \tNS \tfields) cc=$4." (echo $parameters | wc -e "${4}. \tIN \tA \t$3"w) # echo " paratest cc is $cc"
fi if [ "$cc" -gt 0 ] fi then #echo $a $parameters #read yyy set $parameters if [ "$1" != "domainname" ] then if [ "$1" != "" -a "$3" != "" -a "$4" != "" ] then
let a=a+5 echo -e "${1}. \tIN \tNS \t$4." let b=b+5 echo -e "${4}. \tIN \tA \t$3" echo " " fi fi fi
let a=a+6 let b=b+6 #read xxxdone</pre>= Sample Output =<pre>$TTL 3600@ IN SOA rns.cp.net. admin.cp.net. (1735109 1h 15m 30d 1h) IN NS rns.cp.net.rns.cp.net. IN A 192.168.99.253cp.net. IN NS ns.cp.net.ns.cp.net. IN A 192.168.99.1 Raymond.com. IN NS ns.raymond.com.ns.raymond.com. IN A 192.168.98.53 donegcyao.net. IN NS pri-dns.gcyao.net.pri-dns.gcyao.net. IN A 192.168.33.53 bdgushue.com. IN NS pri-dns.bdgushue.com.pri-dns.bdgushue.com. IN A 192.168.14.53 dcwood.com. IN NS pri-dns.dcwood.com.pri-dns.dcwood.com. IN A 192.168.32.53 falli2.com. IN NS pri-dns.falli2.com.pri-dns.falli2.com. IN A 192.168.2.53 tnemat.com. IN NS a2-dns.tnemat.com.a2-dns.tnemat.com. IN A 192.168.25.53 accarneirobrandao.net. IN NS pri-dns.accarneirobrandao.net.pri-dns.accarneirobrandao.net. IN A 192.168.7.53
</pre>
