namecheap bash script to submit dynamic dns from several possible public ip address services

namecheap_dynamic_dns.sh

#!/usr/bin/env bash
# set log path
LogPath=/data/logs/crontab/dynamic_dns.txt
echo "---------------------------------" >> $LogPath
date -u >> $LogPath
echo "---------------------------------" >> $LogPath

# get this machine's public IP address from a service
# [TODO] currently only icanhazip is working, need to check the syntax of the others
remoteIp=$(curl ifconfig.me)
if test -z "$remoteIp"
then
        echo "Public IP ($remoteIp) reported from ifconfig.me" >>  $LogPath
else
        remoteIp=$(dig +short myip.opendns.com @resolver1.opendns.com)
        if test -z "$remoteIp"
        then
                echo "Public IP ($remoteIp) reported from myip.opendns.com" >>  $LogPath
        else
                remoteIp=$(curl icanhazip.com)
                echo "Public IP ($remoteIp) reported from icanhazip.com" >>  $LogPath
        fi
fi

update_ip () {
# Arguments are in this order
# LogPath, DnsHost, DnsDomain, DnsPassword, remoteIp
        LogPath=$1
        DnsHost=$2
        DnsDomain=$3
        DnsPassword=$4
        remoteIp=$5
        echo "--- Sending update for $DnsHost.$DnsDomain ---" >> $LogPath
        # [TODO] It may be safer to send the parameters in the header instead of the URL if supported by namecheap, 
	# but as it's ssl it may not matter see https://stackoverflow.com/a/38727920
        curl "https://dynamicdns.park-your-domain.com/update?host=$DnsHost&domain=$DnsDomain&password=$DnsPassword&ip=$remoteIp" >> $LogPath
        echo "" >> $LogPath
}

#########
# domain your-domain.com
#########
DnsDomain=your-domain.com
DnsPassword=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
DnsHost=www
update_ip "$LogPath" "$DnsHost" "$DnsDomain" "$DnsPassword" "$remoteIp"
DnsHost=*
update_ip "$LogPath" "$DnsHost" "$DnsDomain" "$DnsPassword" "$remoteIp"

#########
# domain your-other-domain.com
#########
DnsDomain=your-other-domain.com
DnsPassword=YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY
DnsHost=www
update_ip "$LogPath" "$DnsHost" "$DnsDomain" "$DnsPassword" "$remoteIp"