This is the version I sing. I don't know who wrote it. I got it from Keith Harding and Laurie Say in 1970 or so.

GREENBACK DOLLAR

And I don't give a damn about a greenback dollar,
Spend it fast as I can.
For a whaling song and a good guitar
Are the only things that I understand.
Oh yeah! The only things that I understand.

Now some people say I'm a no-count,
Others say I'm no good,
But I'm just a natural-born traveling man,
Doing what I think I should.
Oh yeah! Doing what I think I should.

When I was a little baby,
My mother said "Hey son!
Learn to be a man, do what you can,
And sing what must be sung.
Oh yeah! Sing what must be sung.

Now that I'm a grown man,
I've traveled here and there.
I've learned that a bottle of brandy and a song
Are the only ones who ever care.
Oh yeah! The only ones who ever care.