how to extract, convert pdf to dxf

Sometimes we hat to convert .pdf files with some drawing data in it to some other format such as .dxf

In ubuntu we can install and use pstoedit (suggested) because is very quick to convert files... from terminal type:

sudo apt-get update
sudo apt-get install pstoedit

Then to convert pdf to dxf from terminal we can type:

pstoedit -f dxf: filetoconvert.pdf fileconverted.dxf

then we can install and use qcad (also knowed as librecad) or inkscape to open the converted dxf file...

We can also use Inkscape to open the pdf and then save as... dxf

But i found pstoedit is the quick way ...