saveAs in Mac

I think you may be using the console the wrong way. ENTER only runs the current line, unless you select the text first.

You you can put a function call on a button but the function definition must be in a startup script. This is a vital security protection. I suggest too that you use an entirely unique name for the script, never copy the name of a model.

When you use a Unix style path on a Mac, the "Macintosh HD" portion of the path is not used. Try using this:

    this.saveAs("/Users/kk/Desktop/xxxxx.pdf");

Keep in mind that you need to do this from within a privileged context (see here for more information: Acrobat DC SDK Documentation - Doc.saveAs()

What happens when you run this code? Also, from where are you running it?

And app.closeDoc(); is not a valid command. the closeDoc method is a part of the Document object. Use this instead:

this.closeDoc();

If you want to know the correct syntax for the file-path of a specific file, open it in Acrobat and then execute this code in the JS Console:

this.path;

It will print out the full path of current file, in the syntax that you need to use in your code.