Piping into latexrun?

[tom-anders]

With pdflatex, lualatex etc. I am able to do something like echo "test.tex" | pdflatex. This doesn't work with latexrun:

usage: latexrun [-h] [-o FILE] [--latex-cmd CMD] [--latex-args ARGS]
                [--bibtex-cmd CMD] [--bibtex-args ARGS] [--max-iterations N]
                [-W no-CLASS] [-O DIR] [--color {auto,always,never}]
                [--verbose-cmds] [--debug] [--clean-all]
                [file]
latexrun: error: at least one action is required

Any way to make this work? Thanks :)