> you're doing it wrong, just do it right

That's not how I wrote my comment above, I gave you alternatives.

> If I had a choice I would

You have choices, many.

> unless you have a few million dollars to give us to refactor 30 years of technical debt

How is using FileZilla a technical debt? What are you requiring from FileZilla that you need a few million of dollars to refactor code? What kind of code depends on an external FTP client to work? If you give more details about why your company has such a weird technical debt, maybe I or other can give you more options to switch.

> please answer the question

I did, you asked for alternatives, I gave you Rsync and SCP.