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  2. Access-control list - Wikipedia

    en.wikipedia.org/wiki/Access-control_list

    These entries are known as access-control entries (ACEs) in the Microsoft Windows NT, [4] OpenVMS, and Unix-like operating systems such as Linux, macOS, and Solaris. Each accessible object contains an identifier to its ACL. The privileges or permissions determine specific access rights, such as whether a user can read from, write to, or execute ...

  3. File-system permissions - Wikipedia

    en.wikipedia.org/wiki/File-system_permissions

    The execute permission grants the ability to execute a file. 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 ...

  4. Data control language - Wikipedia

    en.wikipedia.org/wiki/Data_Control_Language

    DCL commands are used for access control and permission management for users in the database. With them we can easily allow or deny some actions for users on the tables or records (row level security). DCL commands are: GRANT We can give certain permissions for the table (and other objects) for specified groups/users of a database. DENY

  5. chmod - Wikipedia

    en.wikipedia.org/wiki/Chmod

    Sets UID, sets read, write, and execute permissions for user, and sets read and execute permissions for Group and Others: chmod 2755 setCtrls.sh: sets GID, Sets read, write, and execute permissions for user, and sets read and execute permissions for Group and Others: chmod -R u+rw,g-,o-rx privateStuff

  6. 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 ...

  7. Mandatory access control - Wikipedia

    en.wikipedia.org/wiki/Mandatory_access_control

    TOMOYO Linux is a lightweight MAC implementation for Linux and Embedded Linux, developed by NTT Data Corporation. It has been merged in Linux Kernel mainline version 2.6.30 in June 2009. [ 16 ] Differently from the label-based approach used by SELinux , TOMOYO Linux performs a pathname-based Mandatory Access Control, separating security domains ...

  8. AppArmor - Wikipedia

    en.wikipedia.org/wiki/AppArmor

    AppArmor ("Application Armor") is a Linux kernel security module that allows the system administrator to restrict programs' capabilities with per-program profiles. Profiles can allow capabilities like network access, raw socket access, and the permission to read, write, or execute files on matching paths.

  9. umask - Wikipedia

    en.wikipedia.org/wiki/Umask

    umask command Permissions the mask will prohibit from being set during file creation 0: any permission may be set (read, write, execute) 1: setting of execute permission is prohibited (read and write) 2: setting of write permission is prohibited (read and execute) 3: setting of write and execute permission is prohibited (read only) 4