Update IP for "A" record in Yandex PDD through API

upd_ya_pdd.sh

#!/bin/bash

# Get your token from
# https://pddimp.yandex.ru/token/index.xml?domain=yourdomain.com
token="put token"

# Get DNS information from
# https://pddimp.yandex.ru/nsapi/get_domain_records.xml?token=your_token_here&domain=yourdomain.com

record_id="put record id from 'id' attr"
domain="put domain from 'domain' attr without subdomain (!) sub.domain.com → domain.com" 
subdomain="put subdomain from 'subdomain' attr"
ttl="put desired ttl"

# Path to file which store ip
old_ip_file="/home/geakstr/upd_ya_pdd/ip.txt"

###################################################################

old_ip=$(cat $old_ip_file)
cur_ip=$(/usr/bin/curl -sL http://icanhazip.com)

if [ "$cur_ip" != "$old_ip" ]
then
        echo $cur_ip > $old_ip_file
        ya_pdd_url="https://pddimp.yandex.ru/nsapi/edit_a_record.xml?"
        query_url="${ya_pdd_url}token=${token}&record_id=${record_id}&domain=${domain}&subdomain=${subdomain}&ttl=${ttl}&content=${cur_ip}"
        ya_pdd_response=$(/usr/bin/curl -sL $query_url)
fi