lpr -S filename
should work if the software controlling the printer supports
singlesided printing.
The rest of this page is left for others at Rutgers who may still be
using Solaris printing software.
Solaris printing software is a little different from what you're used to under SunOS 4.1.x. You queue a print request with lp and dequeue one with cancel
The command to print a file singlesided under Solaris is
lp -ynoduplex -dprinter filename
More information about
lp
is available as
lp_options.