Acroread

DO NOT send pdf files directly to the printer with the lpr command. Use acroread to open it and print. If you do want to use a command line try:

acroread -toPostscript file.pdf | lpr

This trick can also serves as a pdf->ps converter. (Use acroread -toPostscript file.pdf > file.ps ). Note that there are two commands: pdf2ps and ps2pdf to convert between ps and pdf formats, though ps2pdf produces a poor quality pdf file.

In case that you are running Linux, the default PDF viewer is xpdf. You can print with

xpdf file.pdf -ps | lpr

command and you might also have a command named pdf2ps to convert pdf files to ps format.