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Blessed are the diffs: for they shall inherit the earth

Recently I’ve been working more with the sophistication that is Docker and it hasn’t escaped me that the foundations of the DevOps world is essentially comprised of layer after layer of diffs. For those readers who aren’t hardcore hackers a diff in back-in-the-day Unix terms simply means a difference. At a glance, as a Unix utility at least, it seems to have been around since the 1970s.