How can I prepare an invoice from the command line?

Making invoices in Openoffice, and saving as a PDF file is annoying and taking too long. Is there any command-line software for Linux that can generate a high quality PDF invoice?

Check out LaTeX. It has a command line interface and I think can read Open Documents but I am not sure about that.

If you don't mind writing a little code, you could use FreshBooks as your invoicing system, and then use their (very simple!) API to create invoices and/or download them in PDF format.

The nice thing about this solution is that you also have a great non-automated system for dealing with invoices.

I ended up using my own solution. I create the invoice as an RTF or other openoffice file. Then, using a custom script, I replace certain keywords in it.

The unoconv utility can convert any openoffice file to PDF.

I don't think this can make invoices from command line, but it's a good tool to know about: http://www.gnucash.org/

This might be a question you want to post on StackOverflow which is more programming oriented and they might have better idea of how you could do this.