<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>aftbit</author><text>I&amp;#x27;ve done the same thing before on a book in college, except my DRM wasn&amp;#x27;t nice enough to let me print 10 pages at a go. Instead, I spun up a virtual X server with Xdummy with a resolution of 1200x10000. That showed a few dozen pages at a time. Then I automated screenshots (scrot) and PageDown (xdotool). Finally, some PIL magic to look for the thin gray line between pages plus convert and ghostscript and I had a PDF!</text><parent_chain></parent_chain></comment><story><title>Getting a full PDF from a DRM-encumbered online textbook</title><url>http://vgel.me/posts/cracking-online-textbook/</url></story>
<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>pdw</author><text>Watermarks and such are easy to remove with PDFtk, the swiss army knife of PDF files. Convert the input files to a plain-text representation, find the code that implements the watermark (it will be the only code that&amp;#x27;s identical on every page), delete it and convert back. Easy as pie. It will also concatenate the partial files.</text><parent_chain></parent_chain></comment><story><title>Getting a full PDF from a DRM-encumbered online textbook</title><url>http://vgel.me/posts/cracking-online-textbook/</url></story>