Shell script to update namecheap.com dynamic dns for a domain with your external IP address

namecheap-ddns.sh

#!/bin/sh

# Shell script to update namecheap.com dynamic dns
# for a domain to your external IP address

HOSTNAME=yoursubdomain
DOMAIN=yourdomainname.com
PASSWORD=y0urp455w0rd

IP=`curl -s echoip.com`

curl "https://dynamicdns.park-your-domain.com/update?host=$HOSTNAME&domain=$DOMAIN&password=$PASSWORD&ip=$IP"

Documentation: https://www.namecheap.com/support/knowledgebase/article.aspx/583/11/how-do-i-configure-ddclient/ As for why they chose to use that domain, that would be a question best directed at them.

…

On Sun, 14 Jan 2024 at 14:15, Alex Spurling ***@***.***> wrote: ***@***.**** commented on this gist. ------------------------------ Thanks - I did search and didn't find any mention of park-your-domain.com in Namecheap's documentation. Why don't they use namecheap.com or api.namecheap.com as their API domain? — Reply to this email directly, view it on GitHub <https://gist.github.com/dalhundal/89159b3f032588586e91#gistcomment-4830332> or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAEIXZKL4OYBPIHBDAW6UVTYOPR7BBFKMF2HI4TJMJ2XIZLTSKBKK5TBNR2WLJDUOJ2WLJDOMFWWLO3UNBZGKYLEL5YGC4TUNFRWS4DBNZ2F6YLDORUXM2LUPGBKK5TBNR2WLJDHNFZXJJDOMFWWLK3UNBZGKYLEL52HS4DFVRZXKYTKMVRXIX3UPFYGLK2HNFZXIQ3PNVWWK3TUUZ2G64DJMNZZDAVEOR4XAZNEM5UXG5FFOZQWY5LFVAYTCNJRHE3TQONHORZGSZ3HMVZKMY3SMVQXIZI> . You are receiving this email because you authored the thread. Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub> .

I made a couple of changes:

• Permits using "@" where you only have the TLD
• "silenced" the first curl
• Displays the Host and Domain values
• Changed the "dig"s to query dns1.registrar-servers.com since those are currently what NameCheap updates

#!/bin/bash
# Bash script to update Namecheap.com dynamic dns

DDNS_HOSTNAME="@"
DDNS_DOMAIN="YourDomainHere.com"
DDNS_PASSWORD="01234567890123456789012345678901"

CURRENT_IP=$(curl -s myip.dnsomatic.com)
if [[ "$DDNS_HOSTNAME" == "@" ]]; then
  CURRENT_DDNS=$(dig +short $DDNS_DOMAIN @dns1.registrar-servers.com)
else
  CURRENT_DDNS=$(dig +short $DDNS_HOSTNAME.$DDNS_DOMAIN @dns1.registrar-servers.com)
fi

echo "Hostname: $DDNS_HOSTNAME; Domain: $DDNS_DOMAIN"
echo "current Namecheap ddns record = $CURRENT_DDNS"
echo "current public IP address = $CURRENT_IP"

if [ "$CURRENT_DDNS" != "$CURRENT_IP" ]; then
    curl "https://dynamicdns.park-your-domain.com/update?host=$DDNS_HOSTNAME&domain=$DDNS_DOMAIN&password=$DDNS_PASSWORD&ip=$CURRENT_IP"
fi