lpr: add page (#3913)

* lpr: add page

* responded to pr review suggestions

* Added references to CUPS/other notable commands

* Update lpr.md

* Update lpr.md

pages/common/lpr.md

@@ -0,0 +1,33 @@
+# lpr
+
+> CUPS tool for printing files.
+> See also `lpstat` and `lpadmin` for listing and configuring printers.
+> More information: <http://www.CUPS.org>.
+
+- Print a file to the default printer:
+
+`lpr {{path/to/file}}`
+
+- Print 2 copies:
+
+`lpr -# {{2}} {{path/to/file}}`
+
+- Print to a named printer:
+
+`lpr -P {{printer}} {{path/to/file}}`
+
+- Print double sided in portrait:
+
+`lpr -o sides={{two-sided-long-edge}} {{path/to/file}}`
+
+- Print double sided in landscape:
+
+`lpr -o sides={{two-sided-short-edge}} {{path/to/file}}`
+
+- Set page size (more options may be available depending on setup):
+
+`lpr -o media={{a4|letter|legal}} {{path/to/file}}`
+
+- Print multiple pages per sheet:
+
+`lpr -o number-up={{2|4|6|9|16}} {{path/to/file}}`