What happened to lpr?
lpr is part of the BSD-style print queue system, which is being phased
over the next few years in favor of the System-V-style system. As of
HP-UX 10.00, the SYSV system is bundled. Here's a quick cheatsheet:
lpr -Pvaxps -> lp -dvaxps
lpq -Pvaxps -> lpstat vaxps
lprm -Pvaxps ID -> cancel vaxps ID
Why would I want to switch over to the System-V-style HP-UX LP spooler?
Because you can do neat things like:
$ lp -dvaxps -odouble FILENAME
which will print double-sided, that is, on both sides of the paper, if
your printer supports it.
How do I send output from nroff to HP LaserJet printers?
$ nroff -Tlj ... | lp -onroff