Well, I found a bunch of PDF documents on my disk today, which I wanted converted to JPEG. Now, Debian replaced ImageMagick in the past for GraphicsMagick, which is supposedly a bit faster and leaner than ImageMagick. So first you need to install graphicsmagick — or rewrite the script to use /usr/bin/convert instead.
The script basically takes every .PDF you have in your current working directory, creates a sub-directory, and then extracts each page of the PDF into a single JPEG image in that subdirectory.
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#!/bin/bash # Needs graphicsmagick [ ! -x /usr/bin/gm ] && exit 1 for file in $PWD/*.pdf; do sudo mkdir $PWD/${file%*.pdf} sudo chown -R nobody.users $PWD/${file%*.pdf} sudo gm convert $PWD/$file JPEG:"$PWD/${file%*.pdf}/${file%*.pdf}%02d.jpg" number="$( echo ${file%*.pdf} | cut -d. -f3 )" title="$( echo ${file%*.pdf} | cut -d. -f4 | sed "s,., ," )" series="$( echo ${file%*.pdf} | cut -d. -f1-2 | sed "s,., ," )" # Create the ComicInfo.xml file cat << EOF | sudo tee ${file%*.pdf}/ComicInfo.xml &>/dev/null <?xml version="1.0"?> <ComicInfo xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <Series>$series</Series> <Number>$number</Number> <Title>$title</Title> </ComicInfo> EOF done |
What I had to google for was basically on how to actually pad the output number. According to the man-page of gm, you just put %02d (or %03d, depending on how much pages your PDFs have at the max) in the desired output file name.