On a Debian system, you can see all users by checking certain files that store user information. Here are a few methods to do this:
### Method 1: Using the `/etc/passwd` File
The primary file that contains user account information in Linux is `/etc/passwd`. You can view the contents of this file using the `cat`, `less`, or `more` command. Each line in this file represents a user.
Open a terminal and use the following command:
```bash
cat