To implement the Luhn algorithm in a Termux environment, you can use a simple shell script (e.g., in Bash). The Luhn algorithm is used to validate a variety of identification numbers, such as credit card numbers.
Here's how to create a script in Termux that validates a number using the Luhn algorithm:
1. **Open Termux.**
2. **Create a new script file** using a text editor like `nano` or `vi`. For example, using `nano`:
```bash
nano


