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  2. Clobbering - Wikipedia

    en.wikipedia.org/wiki/Clobbering

    >file.txt -bash: file.txt: cannot overwrite existing file $ echo "But we can use the >| operator to ignore the noclobber." > | file.txt $ cat file.txt # Successfully overwrote the contents of file.txt using the >| operator But we can use the >| operator to ignore the noclobber. $ set +o noclobber # Changes setting back

  3. List of data-erasing software - Wikipedia

    en.wikipedia.org/wiki/List_of_data-erasing_software

    Linux: Yes internal [9] not directly supported without scripting nwipe: Martijn van Brummelen GNU GPL v2: Linux: Yes external Yes Parted_Magic: Patrick Verner, Parted Magic LLC uses mostly GPL components with published source, a few proprietary components, and fee for media/download [10] [11] OS independent, based on Slackware Linux: Yes ...

  4. loadlin - Wikipedia

    en.wikipedia.org/wiki/Loadlin

    It allows the Linux system to load and replace the running DOS without altering existing DOS system files. loadlin and the Linux kernel are both files on a file system accessible to DOS. It loads the Linux kernel into memory from a file. It also places various configuration parameters into memory, and transfers control to the kernel.

  5. Data remanence - Wikipedia

    en.wikipedia.org/wiki/Data_remanence

    Data remanence is the residual representation of digital data that remains even after attempts have been made to remove or erase the data. This residue may result from data being left intact by a nominal file deletion operation, by reformatting of storage media that does not remove data previously written to the media, or through physical properties of the storage media that allow previously ...

  6. Extract, transform, load - Wikipedia

    en.wikipedia.org/wiki/Extract,_transform,_load

    Some data warehouses may overwrite existing information with cumulative information; updating extracted data is frequently done on a daily, weekly, or monthly basis. Other data warehouses (or even other parts of the same data warehouse) may add new data in a historical form at regular intervals – for example, hourly.

  7. tar (computing) - Wikipedia

    en.wikipedia.org/wiki/Tar_(computing)

    In computing, tar is a computer software utility for collecting many files into one archive file, often referred to as a tarball, for distribution or backup purposes. The name is derived from "tape archive", as it was originally developed to write data to sequential I/O devices with no file system of their own, such as devices that use magnetic tape.

  8. Copy-on-write - Wikipedia

    en.wikipedia.org/wiki/Copy-on-write

    In traditional file systems, file changes overwrite the original data. With COW, when changes are made, a new version of the file is created while keeping the original intact. This approach enables features like snapshots, which capture the state of a file at a specific time without consuming much additional space. Snapshots typically store ...

  9. OverlayFS - Wikipedia

    en.wikipedia.org/wiki/OverlayFS

    Linux, FreeBSD and NetBSD [citation needed] OverlayFS is a union mount filesystem implementation for Linux. It combines multiple different underlying mount points into one, resulting in a single directory structure that contains underlying files and sub-directories from all sources.