Hello Vlad, You will not avoid intermediate files in any case, as Lilypond with gs output will generate ps code, which is then turned into a pdf. If you want to pipe PDFs for convenience you might create a wrapper say plilypond in the search path doing something like this:
#!/bin/bash
t=$(mktemp) 1>&2
lilypond -o "$t" ${@} 1>&2
cat "$t".pdf
rm "$t".pdf 1>&2
Cheers,
Valentin
Am Donnerstag, 4. Jänner 2024, 23:34:28 CET schrieb Volodymyr Prokopyuk:
> Hi,
>
> I know that lilypond can receive a source.ly file from the stdin by
> using lilypond
> -. Is it possible for lilypond to output PDF to the stdout?
>
> My motivation behind using lilypond in a pipeline is to speed up PDF
> generation by avoiding storing intermediary files on disk. The pipeline I'd
> like to implement is
> cat source.ly | lintLy | lilypond - | optimizePDF > score.pdf
> Currently lilypond engraves PDF on disk, so a PDF optimizer has to read,
> optimize, and substitute PDF on disk.
>
> Thank you,
> Vlad
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