Kubuntu 18.04.01.

If I enter:
Code:
konsole --separate --hold --workdir /
I get a new Konsole window with the cursor positioned to the right of the $ prompt, as expected at the root directory.

If I type this command:
Code:
konsole --separate --hold --workdir / -e ls
it gives the expected output but no $ prompt.

So my question is how to modify the 2nd command to produce the output and then present the $ prompt.