Converst an .epub file to .pdf --- because Preview is easier to use than iBooks

epub2pdf.sh

#!/usr/bin/env bash
set -e
# Converts an .epub file to .pdf
# Requires Calibre and ghostscript to be installed

epubfilename="$1"
namenoext="$(basename -- "$epubfilename" .epub)"
randomstr="$(basename $(mktemp))"
tmpfilename1="$namenoext-$randomstr-1.pdf"
tmpfilename2="$namenoext-$randomstr-2.pdf"
pdffilename="$namenoext.pdf"


echo "Convering $epubfilename to pdf..."
 
ebook-convert "$epubfilename" "$tmpfilename1" --embed-all-fonts

gs \
  -sDEVICE=pdfwrite \
  -dCompatibilityLevel=1.4 \
  -dPDFSETTINGS=/ebook \
  -dNOPAUSE -dQUIET -dBATCH \
  -dPrinted=false \
  -sOutputFile="$tmpfilename2" \
  "$tmpfilename1"
rm "$tmpfilename1"
mv "$tmpfilename2" "$pdffilename"

echo "PDF file saved to $pdffilename"