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  2. Existence detection - Wikipedia

    en.wikipedia.org/wiki/Existence_detection

    An existence check before reading a file can catch and/or prevent a fatal error, for instance. For that reason, most programming language libraries contain a means of checking whether a file exists. An existence check can sometimes involve a " brute force " approach of checking all records for a given identifier, as in this Microsoft Excel ...

  3. List of model checking tools - Wikipedia

    en.wikipedia.org/wiki/List_of_model_checking_tools

    Plain MC: simple text-file formats used in MRMC and PRISM. Promela: Process or Protocol Meta Language; it is a verification modeling language. The language allows for the dynamic creation of concurrent processes to model, for example, distributed systems. Starlark: Starlark is a dialect of Python created by Google for Bazel. Model checkers like ...

  4. Fuzzy hashing - Wikipedia

    en.wikipedia.org/wiki/Fuzzy_hashing

    sdhash is a fuzzy hashing tool based on using bloom filters to determine whether one file is contained within another or how similar two files are to each other. [ 11 ] TLSH is a locality sensitive hashing scheme for comparing whether files are similar to each other and has been used for malware clustering.

  5. File URI scheme - Wikipedia

    en.wikipedia.org/wiki/File_URI_scheme

    File URLs are rarely used in Web pages on the public Internet, since they imply that a file exists on the designated host. The host specifier can be used to retrieve a file from an external source, although no specific file-retrieval protocol is specified; and using it should result in a message that informs the user that no mechanism to access ...

  6. List of file signatures - Wikipedia

    en.wikipedia.org/wiki/List_of_file_signatures

    Single file NIfTI format, used extensively in biomedical imaging. 6E 69 31 00: ni1: 344 hdr Header file of a .hdr/.img pair in NIfTI format, used extensively in biomedical imaging. 52 41 46 36 34: RAF64: 0 Report Builder file from Digital Metaphors: 56 49 53 33: VIS3: 0 Resource file Visionaire 3.x Engine: 4D 53 48 7C 42 53 48 7C: MSH| BSH| 0 hl7

  7. List of hash functions - Wikipedia

    en.wikipedia.org/wiki/List_of_hash_functions

    This is a list of hash functions, including cyclic redundancy checks, checksum functions, and cryptographic hash functions. This list is incomplete ; you can help by adding missing items . ( February 2024 )

  8. Debugging - Wikipedia

    en.wikipedia.org/wiki/Debugging

    API-based: check for the existence of a debugger using system information; Exception-based: check to see if exceptions are interfered with; Process and thread blocks: check whether process and thread blocks have been manipulated; Modified code: check for code modifications made by a debugger handling software breakpoints

  9. Time-of-check to time-of-use - Wikipedia

    en.wikipedia.org/wiki/Time-of-check_to_time-of-use

    Here, access is intended to check whether the real user who executed the setuid program would normally be allowed to write the file (i.e., access checks the real userid rather than effective userid). This race condition is vulnerable to an attack: