Attempting to launch the LPR.EXE command on Windows Server 2008 or Windows Server 2008 R2 may result in the following error:
"LPR.EXE" is not recognized as an internal or external command, operable program or batch file.
This behavior occurs because LPR.EXE is only available if the LPR Port Monitor feature is installed.
Use Server Manager to install the LPR Port Monitor feature.
The LPR.EXE executable will be installed in the %windir%\system32 folder.
Line Printer Remote (LPR) Port Monitor enables the computer to print to printers that are shared using any Line Printer Daemon (LPD) service. (LPD service is commonly used by UNIX-based computers and printer-sharing devices.)