On UNIX and LINUX platforms, you can use cat command to copy file to a raw device.

For example, the following command sends the font file to printer:

#cat C80D.txt +mrvcode39_legacy_4pitch.sfp +c5F.txt  /dev/lpt1r

Here, /dev/lpt1r refers to the printer connected to the LPT1 port. The r means raw device.