Simple Bash script to create a rich text format file from a plain text file

txt2rtf.sh

#!/bin/sh
#check to see if arguments are set
E_BADARGS=65

if [ ! -n "$1" ]
then
  echo "Usage: `basename $0` textfilename [rtffilename optional]"
  exit $E_BADARGS
fi

#Set font face
#font="Courier" 
font="Arial" 
#font="Times New Roman" 

#Set font size in pt
fontsize=12

#Set document height in inches
height=11 #letter
#height=14 #legal

#Set document width in inches
width=8.5

#Set document orientation
orientation="portrait"
#orientation="landscape"

#set document margins in inches
leftm=0.5
rightm=0.5
topm=0.5
bottomm=0.5

##################################
#NOTHING BELOW NEEDS TO BE EDITED#
##################################

#calculate rtf sizes
fontsize=$(echo "$fontsize*2" | bc | sed 's/\.[^.]*$//')
height=$(echo "$height*1440" | bc | sed 's/\.[^.]*$//')
width=$(echo "$width*1440" | bc | sed 's/\.[^.]*$//')
leftm=$(echo "$leftm*1440" | bc | sed 's/\.[^.]*$//')
rightm=$(echo "$rightm*1440" | bc | sed 's/\.[^.]*$//')
topm=$(echo "$topm*1440" | bc | sed 's/\.[^.]*$//')
bottomm=$(echo "$bottomm*1440" | bc | sed 's/\.[^.]*$//')

#set output filename
if [ ! -n "$2" ]
then
	fname=`echo $1 | sed 's/\.[^.]*$//'`.rtf
else 
	fname=`echo $2`
fi

#start header
echo "{\rtf1\ansi\deff0 {\fonttbl {\f0 $font;}}" > $fname
echo "\paperh$height \paperw$width" >> $fname
echo "\margl$leftm \margr$rightm \margt$topm \margb$bottomm" >> $fname
echo "\f0\fs$fontsize" >> $fname

#add \line to the end of each line and replace an form feed characters
#with \page for page breaks
sed s/\$/'\\line'/ $1 | sed s/\\f/'\\page'/ >> $fname

#close rtf file
echo "}" >> $fname