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  2. Linux Unified Key Setup - Wikipedia

    en.wikipedia.org/wiki/Linux_Unified_Key_Setup

    This master key is encrypted with each active user key. [6] User keys are derived from passphrases, FIDO2 security keys, TPMs or smart cards. [7] [8] The multi-layer approach allows users to change their passphrase without re-encrypting the whole block device. Key slots can contain information to verify user passphrases or other types of keys.

  3. Ubuntu - Wikipedia

    en.wikipedia.org/wiki/Ubuntu

    Ubuntu (/ ʊ ˈ b ʊ n t uː / ⓘ uu-BUUN-too) [8] is a Linux distribution derived from Debian and composed mostly of free and open-source software. [9] [10] [11] Ubuntu is officially released in multiple editions: Desktop, [12] Server, [13] and Core [14] for Internet of things devices [15] and robots.

  4. Magic SysRq key - Wikipedia

    en.wikipedia.org/wiki/Magic_SysRq_key

    The magic SysRq key is a key combination understood by the Linux kernel, which allows the user to perform various low-level commands regardless of the system's state. It is often used to recover from freezes , or to reboot a computer without corrupting the filesystem . [ 1 ]

  5. XZ Utils backdoor - Wikipedia

    en.wikipedia.org/wiki/XZ_Utils_backdoor

    [b] [4] The backdoor gives an attacker who possesses a specific Ed448 private key remote code execution capabilities on the affected Linux system. The issue has been given the Common Vulnerabilities and Exposures number CVE - 2024-3094 and has been assigned a CVSS score of 10.0, the highest possible score.

  6. Booting process of Linux - Wikipedia

    en.wikipedia.org/wiki/Booting_process_of_Linux

    Systemd's initialization instructions for each daemon are recorded in a declarative configuration file rather than a shell script. For inter-process communication, systemd makes Unix domain sockets and D-Bus available to the running daemons. Systemd is also capable of aggressive parallelization.

  7. systemd - Wikipedia

    en.wikipedia.org/wiki/Systemd

    systemd is the first daemon to start during booting and the last daemon to terminate during shutdown. The systemd daemon serves as the root of the user space's process tree; the first process (PID 1) has a special role on Unix systems, as it replaces the parent of a process when the original parent terminates. Therefore, the first process is ...

  8. Linux From Scratch - Wikipedia

    en.wikipedia.org/wiki/Linux_From_Scratch

    The Udev package contains programs for dynamic creation of device nodes. The development of udev has been merged with systemd, but most of systemd is incompatible with LFS. Here we build and install just the needed udev files. Creative Commons licenses and MIT License: util-linux: The Util-linux package contains miscellaneous utility programs.

  9. Security-Enhanced Linux - Wikipedia

    en.wikipedia.org/wiki/Security-Enhanced_Linux

    Files, network ports, and other hardware also have an SELinux context, consisting of a name, role (seldom used), and type. In the case of file systems, mapping between files and the security contexts is called labeling. The labeling is defined in policy files but can also be manually adjusted without changing the policies.