When I ask for file permissions on a Windows-10 WSL Ubuntu app, I do:

```
ls -ltra

```

And I get information like:

```
-rwxrwxrwx 1 scampsd scampsd 42034 Mar 29 15:26 Filename.cs
drwxrwxrwx 1 scampsd scampsd  4096 Mar 29 15:26 .

```

Now, as explained in [this other StackOverflow question](https://stackoverflow.com/questions/71673088), I get information, related to the so-called "file permission number", being 644 in this case.

Is there a UNIX/Linux commandline command I can launch in order to get "644" as an answer, instead of the `rwx---...` thing?