Print files. See also:
lpstat
andlpadmin
. More information: https://openprinting.github.io/cups/doc/man-lpr.html.
lpr path/to/file
lpr -# 2 path/to/file
lpr -P printer path/to/file
lpr -o page-ranges=2|2-16 path/to/file
lpr -o sides=two-sided-long-edge|two-sided-short-edge path/to/file
lpr -o media=a4|letter|legal path/to/file
lpr -o number-up=2|4|6|9|16 path/to/file