Print double sided PDF documented interactively with HP DeskJet F4480

pdflp.sh

#!/bin/bash

# Use realpath for tilde expansion
pdf_file=$(realpath "${1}")

# Usage message if file does not exist
if ! [ -e "${pdf_file}" ] ; then
    echo -e "Usage: $(basename $0) <pdf_file>

Double-sided printing.  First prints the odd pages in reverse order,
then the even pages."
    exit 1
fi

# Count the number of pages
sides=$( pdfinfo "${pdf_file}" | grep Pages | cut -d ' ' -f 2- | tr -d '[[:space:]]' )
pages=$( expr $sides / 2 + $sides % 2 )

# Tell the user how many papers to load into the printer tray
echo "Please load $pages pages onto the printer tray and ENTER to continue."
read -s

lp -o outputorder=reverse \
   -o page-set=odd \
   "${pdf_file}"

echo "Reload the printed pages and ENTER to continue."
read -s
lp -o outputorder=normal \
   -o page-set=even \
   "${pdf_file}"