#Deduplicator wikipedia how to

ItДiscovers duplicate, newer or missing files and empty folders. Komparator is an application that searches and synchronizes two directories. * dead menu entries (.desktop files pointing to non-existing executables) * broken executables (executables with missing libraries)

Search for files basing on several criterias you can seek for: KleanSweep allows you to reclaim disk space by finding unneeded files. On common image types,ДЇindimagedupes seems to be around 98% accurate. This allows you to compare two images or a whole tree of images andДetermine if any are similar or identical.

#Deduplicator wikipedia how to

Yeah, this Ask Slashdot should really be about teaching people how to search for packages in aptitude or whatever your package manager is.ДЇinds visually similar or duplicate imagesДЇindimagedupes is a commandline utility which performs a rough 'visual diff' to If the hashes are small enough to all live in memory (or enough of them that you can intelligently juggle your comparisons without having to wait on the disk too much), then you'll be fine for tens of thousands of pictures.Д«ut photographers can take thousands of pictures per shoot, hundreds of You have to read all the images and generate the hashes, but that's Theta(n).Д¬omparing one hash to every other has is Theta(n^2). O(n^2) vs O(2^n) is a huge difference eve for very small datasets (hundreds of pictures). It's akin to running compression on a filesystem: read speed is an order of magnitude slower than the compression. I doubt the difference between O(2^n) and O(n^2) would make a huge impact anyway: the biggest bottleneck is going to be disk read and seek time, not comparing fingerprints. Fingerprints are then compared using an algorithm that looks like O(n^2).

It creates a 16x16 thumbnail of each image (it's a little more complicated than that - read more on the manpage ), and uses this as a fingerprint. It's actually pretty nifty how findimagedupes works. Why do I have this sneaking suspicion it runs in exponential time, varying as the size of the data set.