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  2. 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]

  3. Name Service Switch - Wikipedia

    en.wikipedia.org/wiki/Name_Service_Switch

    Earlier Unix-like systems either accessed only local files or had hard-coded rules for accessing files or network-stored databases. Ultrix was a notable exception with its nearly identical functionality of the NSS configuration file in /etc/svc.conf.

  4. ifconfig - Wikipedia

    en.wikipedia.org/wiki/Ifconfig

    Linux also features iwspy, to read the signal, noise and quality of a wireless connection. Other related tools for configuring Ethernet adapters are: ethtool, mii-tool, and mii-diag in Linux and the command dladm show-link in Solaris. The ip suite has a similar purpose and is meant to replace the deprecated ifconfig. [6]

  5. NetworkManager - Wikipedia

    en.wikipedia.org/wiki/NetworkManager

    But as we've transitioned from physically large servers to more portable hosts that may be plugged and unplugged (or moved from WiFi hotspot to WiFi hotspot) at the user's discretion, dynamic configurations (i.e., not stored in a static configuration file but taken from outside the host, and potentially changing after boot) have become a more ...

  6. Runlevel - Wikipedia

    en.wikipedia.org/wiki/Runlevel

    A runlevel defines the state of the machine after boot. Different runlevels are typically assigned (not necessarily in any particular order) to the single-user mode, multi-user mode without network services started, multi-user mode with network services started, system shutdown, and system reboot system states.

  7. chroot - Wikipedia

    en.wikipedia.org/wiki/Chroot

    chroot is an operation on Unix and Unix-like operating systems that changes the apparent root directory for the current running process and its children.A program that is run in such a modified environment cannot name (and therefore normally cannot access) files outside the designated directory tree.

  8. .local - Wikipedia

    en.wikipedia.org/wiki/.local

    Most Linux distributions also incorporate and are configured to use zeroconf. By default, each computer's Avahi daemon will respond to mDNS hostname.local queries, and most shell commands and application program calls that attempt to resolve such names are routed to that daemon by the default hosts: line in the Name Service Switch configuration ...

  9. Multicast DNS - Wikipedia

    en.wikipedia.org/wiki/Multicast_DNS

    Multicast DNS (mDNS) is a computer networking protocol that resolves hostnames to IP addresses within small networks that do not include a local name server.It is a zero-configuration service, using essentially the same programming interfaces, packet formats and operating semantics as unicast Domain Name System (DNS).