Create README.md

README.md

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+# update-cloudflare-dns
+
+This repository contains a script for automatically updating a Cloudflare DNS A record to point to a dynamic DNS (DDNS) service instead of a static IP address. This can be useful if your IP address changes frequently.
+
+## Prerequisites
+
+- A domain name managed by Cloudflare
+- A Cloudflare account
+- Cloudflare API key
+- A dynamic DNS (DDNS) service
+- A server running a Unix-like operating system (like Linux or macOS)
+- Basic knowledge of the command line
+
+## How to use
+
+1. Download the `cloudflare_ddns.sh` script.
+
+2. Open the script in a text editor and replace the placeholders at the top with your actual information:
+```bash 
+auth_email="your_cloudflare_account_email"
+auth_key="your_cloudflare_api_key"
+zone_identifier="your_cloudflare_zone_id"
+record_name="your_domain_or_subdomain"
+```
+
+3. Make the script executable by running this command in the terminal: 
+```bash chmod +x cloudflare_ddns.sh```
+5. Test the script by running it manually:
+```bash ./cloudflare_ddns.sh```
+7. If the script works as expected, you can set it up to run automatically at regular intervals using cron. To do this, type `crontab -e` in your terminal to open the crontab configuration file. Add a line like this to schedule the script to run every hour:
+```bash 0 * * * * /path/to/cloudflare_ddns.sh```
+
+
+Save and exit the crontab file. The cron daemon will now automatically run your script according to the schedule you specified.
+
+## Troubleshooting
+
+If you run into problems, check the following:
+
+- Make sure you replaced all the placeholders in the script with your actual information.
+- Check the permissions of the script. It needs to be executable to be run as a script.
+- If the script isn't running as expected from cron, check your system's mail or the syslog for error messages.
+
+## License
+
+This script is released under the MIT License. See the included LICENSE file for more details.
+
+
+