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  2. File-system permissions - Wikipedia

    en.wikipedia.org/wiki/File-system_permissions

    This permission must be set for executable programs, in order to allow the operating system to run them. When set for a directory, the execute permission is interpreted as the search permission: it grants the ability to access file contents and meta-information if its name is known, but not list files inside the directory, unless read is set also.

  3. Extended file attributes - Wikipedia

    en.wikipedia.org/wiki/Extended_file_attributes

    Unlike forks, which can usually be as large as the maximum file size, extended attributes are usually limited in size to a value significantly smaller than the maximum file size. Typical uses include storing the author of a document, the character encoding of a plain-text document, or a checksum , cryptographic hash or digital certificate , and ...

  4. List of file formats - Wikipedia

    en.wikipedia.org/wiki/List_of_file_formats

    This is a list of file formats used by ... These file formats allow for the rapid creation of new binary file formats. ... LSMaker script file (program using layered ...

  5. Filename - Wikipedia

    en.wikipedia.org/wiki/Filename

    Filename maximum length is not standard and might depend on the code unit size. Although it is a serious issue, in most cases this is a limited one. [10] On Linux, this means the filename is not enough to open a file: additionally, the exact byte representation of the filename on the storage device is needed.

  6. Python syntax and semantics - Wikipedia

    en.wikipedia.org/wiki/Python_syntax_and_semantics

    A snippet of Python code with keywords highlighted in bold yellow font. The syntax of the Python programming language is the set of rules that defines how a Python program will be written and interpreted (by both the runtime system and by human readers). The Python language has many similarities to Perl, C, and Java. However, there are some ...

  7. File locking - Wikipedia

    en.wikipedia.org/wiki/File_locking

    The sharing mode (dwShareMode) parameter of the CreateFile [2] function (used to open files) determines file-sharing. The sharing mode can be specified to allow sharing the file for read, write, or delete access, or any combination of these. Subsequent attempts to open the file must be compatible with all previously granted sharing-access to ...

  8. File attribute - Wikipedia

    en.wikipedia.org/wiki/File_attribute

    Writing to file only allowed in append mode. Immutable i +i,-i: Prevents any change to file's contents or metadata: file/directory cannot be written to, deleted, renamed, or hard-linked. No dump d +d,-d: File is skipped by the dump program: Secure deletion s +s,-s: Requests that, when deleted, all file data blocks are filled with zeroes ...

  9. lsof - Wikipedia

    en.wikipedia.org/wiki/Lsof

    for all files in use by the process, including the executing text file and the shared libraries it is using: the file descriptor number of the file, if applicable; the file's access mode; the file's lock status; the file's device numbers; the file's inode number; the file's size or offset; the name of the file system containing the file;