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2. dup (system call) - Wikipedia

   en.wikipedia.org/wiki/Dup_(system_call)

   Both file descriptors in a dup() system call refer to the same open file description which means they share file offset and file status flags; Similar but not identical to the logic used in pointers, shallow or deep copying or references, changes to the offset on one of the file descriptors changes it for the

3. Data deduplication - Wikipedia

   en.wikipedia.org/wiki/Data_deduplication

   Source deduplication ensures that data on the data source is deduplicated. This generally takes place directly within a file system. The file system will periodically scan new files creating hashes and compare them to hashes of existing files. When files with same hashes are found then the file copy is removed and the new file points to the old ...

4. Fast Duplicate File Finder - Wikipedia

   en.wikipedia.org/wiki/Fast_Duplicate_File_Finder

   Fast Duplicate File Finder is a Windows tool developed by MindGems Inc, available as a freeware version and a full commercial version. It is intended to scan a user's computer for duplicate files, display a list of such files and let the user delete unneeded copies with the purpose of freeing up hard drive space.

5. Kernel same-page merging - Wikipedia

   en.wikipedia.org/wiki/Kernel_same-page_merging

   In computing, kernel same-page merging (KSM), also known as kernel shared memory, memory merging, memory deduplication, and page deduplication is a kernel feature that makes it possible for a hypervisor system to share memory pages that have identical contents between multiple processes or virtualized guests.

6. List of file copying software - Wikipedia

   en.wikipedia.org/wiki/List_of_file_copying_software

   File copying is a fundamental operation for data storage. [citation needed] Most popular operating systems such as Windows, macOS and Linux as well as smartphone operating systems such as Android contain built-in file copying functions as well as command line (CLI) and graphical (GUI) interfaces to filing system copy and move functions. In some ...

7. PDFtk - Wikipedia

   en.wikipedia.org/wiki/Pdftk

   PDFtk (short for PDF Toolkit) is a toolkit for manipulating Portable Document Format (PDF) documents. [3] [4] It runs on Linux, Windows and macOS. [5]It comes in three versions: PDFtk Server (open-source command-line tool), PDFtk Free and PDFtk Pro (proprietary paid). [2]