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As with file operations generally, it would be a good idea to make backups at the beginning and also intermittently along the way, so as to be able to check back and see how things used to be, prior to one’s intervention. For some purposes, I might have to remember that I had thus distorted fileset 2: it might now contain fewer files than it previously contained, but that would not necessarily mean that it was originally inferior to fileset 1. If my duplication detection program found file X in fileset 1 and also in fileset 2, I could use that program to delete the copy of X that existed in fileset 2.

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I believed but wasn’t certain that the options described here were present in the free version.

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I had been using DoubleKiller Pro for some years, and was familiar with its options, so that’s what I used in this case. A search led to various lists of recommended duplicate detectors. To find the union of multiple filesets, I could use a duplicate file detection program. A later post provides an updated and more thorough look at some such tools. In the case of filesets, the union would be the complete set of all files existing in at least one fileset, after eliminating duplicates, while the intersection would be the list of files that existed in all filesets.Īmong other things, this post explores tools for calculating hash values for files.

The Math Lab defined the union of two sets as “the set of elements which are in either set,” and the intersection of two sets as “the set of elements which are in both sets.” So if set 1 consisted of A and B, and set 2 consisted of B and C, then the union of sets 1 and 2 would be A, B, and C (typically written without duplication - that is, not A, B, B, C), and the intersection of sets 1 and 2 would be B. I wanted to find their union and their intersection. Just make sure to tag the post with the flair and give a little background info/context.I had several sets of files. On Fridays we'll allow posts that don't normally fit in the usual data-hoarding theme, including posts that would usually be removed by rule 4: “No memes or 'look at this '”

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#Programs like dupeguru for windows 10 download#

Historic Reddit Archives & Download Tools, Etc.ģ.3v Pin Reset Directions :D / Alt Imgur link And we're trying really hard not to forget. Along the way we have sought out like-minded individuals to exchange strategies, war stories, and cautionary tales of failures. Everyone has their reasons for curating the data they have decided to keep (either forever or For A Damn Long Timetm). government or corporate espionage), cultural and familial archivists, internet collapse preppers, and people who do it themselves so they're sure it's done right. Among us are represented the various reasons to keep data - legal requirements, competitive requirements, uncertainty of permanence of cloud services, distaste for transmitting your data externally (e.g.