Mini Shell

#!/bin/sh
# Convert PDF to PostScript.

# This definition is changed on install to match the
# executable name set in the makefile
GS_EXECUTABLE=gs
gs="`dirname \"$0\"`/$GS_EXECUTABLE"
if test ! -x "$gs"; then
	gs="$GS_EXECUTABLE"
fi
GS_EXECUTABLE="$gs"

OPTIONS=""
while true
do
	case "$1" in
	-?*) OPTIONS="$OPTIONS $1" ;;
	*)  break ;;
	esac
	shift
done

if [ $# -eq 2 ] 
then
    outfile=$2
elif [ $# -eq 1 ]
then
    outfile=`basename "$1" \.pdf`.ps
else
    echo "Usage: `basename \"$0\"` [-dASCII85EncodePages=false] [-dLanguageLevel=1|2|3] input.pdf [output.ps]" 1>&2
    exit 1
fi

# Doing an initial 'save' helps keep fonts from being flushed between pages.
# We have to include the options twice because -I only takes effect if it
# appears before other options.
exec "$GS_EXECUTABLE" $OPTIONS -q -dNOPAUSE -dBATCH -P- -dSAFER -sDEVICE=ps2write "-sOutputFile=$outfile" $OPTIONS -c save pop -f "$1"