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  2. Linux user group - Wikipedia

    en.wikipedia.org/wiki/Linux_user_group

    A Linux User Group or Linux Users' Group (LUG) or GNU/Linux User Group (GLUG) is a private, generally non-profit or not-for-profit organization that provides support and/or education for Linux users, particularly for inexperienced users. The term commonly refers to local groups that meet in person but is also used to refer to online support ...

  3. Wheel (computing) - Wikipedia

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

    The wheel group is a special user group used on some Unix systems, mostly BSD systems, [citation needed] to control access to the su [4] [5] or sudo command, which allows a user to masquerade as another user (usually the super user). [1] [2] [6] Debian and its derivatives create a group called sudo with purpose similar to that of a wheel group. [7]

  4. Users' group - Wikipedia

    en.wikipedia.org/wiki/Users'_group

    Computer user groups may consist of members who primarily use a specific operating system, such as Linux. While many hackers use free and open source software, others use Macintosh, RISC OS, Windows and Amiga OS. There are also other user groups that concentrate on either Mac OS (Macintosh User Group or MUG) or Linux (Linux User Group or LUG).

  5. File-system permissions - Wikipedia

    en.wikipedia.org/wiki/File-system_permissions

    Some systems diverge from the traditional POSIX model of users and groups by creating a new group – a "user private group" – for each user. Assuming that each user is the only member of its user private group, this scheme allows an umask of 002 to be used without allowing other users to write to newly created files in normal directories ...

  6. Group identifier - Wikipedia

    en.wikipedia.org/wiki/Group_identifier

    In Unix-like systems, multiple users can be put into groups. POSIX and conventional Unix file system permissions are organized into three classes, user, group, and others.The use of groups allows additional abilities to be delegated in an organized fashion, such as access to disks, printers, and other peripherals.

  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. Linux namespaces - Wikipedia

    en.wikipedia.org/wiki/Linux_namespaces

    A user namespace contains a mapping table converting user IDs from the container's point of view to the system's point of view. This allows, for example, the root user to have user ID 0 in the container but is actually treated as user ID 1,400,000 by the system for ownership checks. A similar table is used for group ID mappings and ownership ...

  9. List of users' groups - Wikipedia

    en.wikipedia.org/wiki/List_of_users'_groups

    Adamcon (Coleco Adam user group) Toronto PET Users Group (TPUG) SHARE; Macintosh User Groups in the UK; DUsers, the first Macintosh users group, based at Drexel University; IIUG International Informix Users Group; COMMON for Power Systems (IBM i, AS/400, iSeries, System i, AIX and Linux) users in North America.