lp printing:
	$pr file.txt | lpr
	$lpq	- print jobs in queue.
	$lprm -	- kills all print jobs for the user who issues the command.
	$lprm 31	- kills print job 31
	$lpc	- configure lpd.
	$lpc status all
		disable option	- prevents any new print jobs from being entered.
		down option	- diables all printing on the printer.
		enable option	- allow new jobs to enter the printer queue.
		quit or exit	- leave lpc.
		restart option	- restart lpd for that printer.
		status option	- print status of printer.
		up option	- enable everything and start a new lpd.
print man pages:
	man man | col -b | lpr