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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. File attribute - Wikipedia

    en.wikipedia.org/wiki/File_attribute

    Common file attributes supported by Oracle Solaris and illumos systems Attribute Compact flag for ls & chmod Semantics and rationale appendonly: a: Writing to file only allowed in append mode. immutable: i: Prevents any change to file's contents or metadata (except access time): file/directory cannot be written to, deleted, or renamed. nodump: d

  4. yum (software) - Wikipedia

    en.wikipedia.org/wiki/Yum_(software)

    YUM is implemented as libraries in the Python programming language, with a small set of programs that provide a command-line interface. [7] GUI-based wrappers such as YUM Extender (yumex) also exist, [8] and has been adopted for Fedora Linux until version 22. [9]

  5. Object file - Wikipedia

    en.wikipedia.org/wiki/Object_file

    An object file may also work like a shared library. The metadata that object files may include can be used for linking or debugging; it includes information to resolve symbolic cross-references between different modules, relocation information, stack unwinding information, comments, program symbols, and debugging or profiling information. Other ...

  6. List of file formats - Wikipedia

    en.wikipedia.org/wiki/List_of_file_formats

    .bak, .bk – Bak file various backup formats: some just copies of data files, some in application-specific data backup formats, some formats for general file backup programs BIN – binary data, often memory dumps of executable code or data to be re-used by the same software that originated it

  7. setuid - Wikipedia

    en.wikipedia.org/wiki/Setuid

    The Unix and Linux access rights flags setuid and setgid (short for set user identity and set group identity) [1] allow users to run an executable with the file system permissions of the executable's owner or group respectively and to change behaviour in directories. They are often used to allow users on a computer system to run programs with ...

  8. ExifTool - Wikipedia

    en.wikipedia.org/wiki/ExifTool

    ExifTool is a free and open-source software program for reading, writing, and manipulating image, audio, video, and PDF metadata.As such, ExifTool classes as a tag editor.It is platform independent, available as both a Perl library (Image::ExifTool) and a command-line application.

  9. File descriptor - Wikipedia

    en.wikipedia.org/wiki/File_descriptor

    File descriptors for a single process, file table and inode table. Note that multiple file descriptors can refer to the same file table entry (e.g., as a result of the dup system call [3]: 104 ) and that multiple file table entries can in turn refer to the same inode (if it has been opened multiple times; the table is still simplified because it represents inodes by file names, even though an ...