Question: Can you show/list all extended-attributes and how?

Answer: 
In Linux, independent of filesystem command to view file extended attributes is

```
getfattr -d -m ".*" <filename>

```

At last it show Selinux attributes.

```
getfattr -d <filename>

```

Show only user.\* attributes.
getfattr is not present in my debian distribution. I use this instead:

```
lsattr <filename>

```