Shell Programming and Scripting

#!/bin/bash

current_date=`date +%d-%m-%Y_%H.%M.%S`
today=`date +%d%m%Y`
yesterday=`date -d 'yesterday' '+%d%m%Y'`
RootPath=/var/domaincount/biz/
LOG=/var/tmp/Intelliscanlog/biz/bizcount$current_date.log

cd $RootPath
echo Intelliscan Process started for .BIZ TLD $current_date >> $LOG

#################################################################################################
## Using Wget Downloading the Zone files it will try only one time
if ! wget --tries=1 --ftp-user=USERNAME --ftp-password=PASSWORD ftp://ftp.URL/zone.gz

then
    echo Download Not Success Domain count Failed With Error >> $LOG
    exit 1
fi
###The downloaded file in Gunzip format from that we need to unzip and start the domain count process####

gunzip zone.gz
mv biz.zone $RootPath/$today.biz

###### It will start the Count #####
awk '/^[^ ]+ IN NS/ && !_[$1]++{print $1; tot++}END{print "\nTotal",tot,"Domains"}' $RootPath/$today.biz > $RootPath/zonefile/$today.biz
awk '/Total/ {print $2}' $RootPath/zonefile/$today.biz > $RootPath/$today.count

### Calculation Part
a=$(< $RootPath/$today.count)
b=$(< $RootPath/$yesterday.count)
c=$(awk 'NR==FNR{a[$0];next} $0 in a{tot++}END{print tot}' $RootPath/zonefile/$today.biz $RootPath/zonefile/$yesterday.biz)


echo "$current_date Today Count For BIZ TlD $a" >> $LOG
echo "$current_date New Registration Domain Counts $((c - a))" >> $LOG
echo "$current_date Deleted Domain Counts $((c - b))" >> $LOG
cat $LOG | mail -s "BIZ Tld Count log" 07anis@gmail.com