usr/man/man1/lpr.1

.TH LPR 1
.UC
.SH NAME
lpr \- line printer spooler
.SH SYNOPSIS
.B lpr
[
.B \-m
] [ name ... ]
.SH DESCRIPTION
.I Lpr
causes the
named files
to be queued for printing.
If no files are named, the standard input is read.
The option
.B \-m
causes notification via
.IR mail (1)
to be sent when the job completes.
.SH FILES
.ta 2i
/usr/spool/lpd/*        spool area
.br
/usr/lib/lpd    printer daemon
.br
/usr/lib/lpf    filter to handle banners and underlining
.SH "SEE ALSO"
lpq(1), lprm(1)
.SH BUGS
Queued jobs print in directory (seemingly random) order.