inkscape --export-type=pdf --export-dpi=96 *.svg
pdfunite *.pdf output.pdf
ps2pdf -dPDFSETTINGS=/ebook output.pdf output_ebook.pdf
ps2pdf output.pdf output_default.pdf
EN WINDOWS (Instalar paquetes poppler http://blog.alivate.com.au/poppler-windows/)
for /f "tokens=1* delims=." %i in ('dir /b *.svg') do inkscape --export-dpi=96 --file="%i.svg" --export-pdf="%i.pdf"
inkscape --export-dpi=96 --file="NOMBRE_DEL_ARCHIVO.svg" --export-pdf="output.pdf"
pdfunite *.pdf output.pdf