My apologies. My previous messaged contained an error. There needs to be a space between "cat" and the path to the image. This is because "cat" is not a directory, but a utility that comes standard in unix-like systems. It is designed to read files sequentially.

Here is the corrected command. Replace `<path to image>` with the path to your image.

```bash
cat <path to image> | base64
```

So in your case it would be:

```bash
cat /home/root/cat.png | base64
```
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