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  2. List of HTTP status codes - Wikipedia

    en.wikipedia.org/wiki/List_of_HTTP_status_codes

    It alerts the client to wait for a final response. The message consists only of the status line and optional header fields, and is terminated by an empty line. As the HTTP/1.0 standard did not define any 1xx status codes, servers must not [note 1] send a 1xx response to an HTTP/1.0 compliant client except under experimental conditions. 100 Continue

  3. ethtool - Wikipedia

    en.wikipedia.org/wiki/Ethtool

    ethtool is the primary means in Linux kernel-based operating systems (primarily Linux and Android) for displaying and modifying the parameters of network interface controllers (NICs) and their associated device driver software from application programs running in userspace.

  4. tcpdump - Wikipedia

    en.wikipedia.org/wiki/Tcpdump

    tcpdump is a data-network packet analyzer computer program that runs under a command line interface.It allows the user to display TCP/IP and other packets being transmitted or received over a network to which the computer is attached. [3]

  5. sudo - Wikipedia

    en.wikipedia.org/wiki/Sudo

    sudo retains the user's invocation rights through a grace period (typically 5 minutes) per pseudo terminal, allowing the user to execute several successive commands as the requested user without having to provide a password again. [21] As a security and auditing feature, sudo may be configured to log each command run.

  6. Routing table - Wikipedia

    en.wikipedia.org/wiki/Routing_table

    Route table showing internet BGP routes . In computer networking, a routing table, or routing information base (RIB), is a data table stored in a router or a network host that lists the routes to particular network destinations, and in some cases, metrics (distances) associated with those routes.

  7. 8b/10b encoding - Wikipedia

    en.wikipedia.org/wiki/8b/10b_encoding

    The 5b/6b code is a paired disparity code, and so is the 3b/4b code. Each 6- or 4-bit code word has either equal numbers of zeros and ones (a disparity of zero), or comes in a pair of forms, one with two more zeros than ones (four zeros and two ones, or three zeros and one one, respectively) and one with two less.

  8. errno.h - Wikipedia

    en.wikipedia.org/wiki/Errno.h

    Protocol not available EPROTONOSUPPORT: 93: Protocol not supported ESOCKTNOSUPPORT: 94: Socket type not supported EOPNOTSUPP: 95: Operation not supported EPFNOSUPPORT: 96: Protocol family not supported EAFNOSUPPORT: 97: Address family not supported by protocol EADDRINUSE: 98: Address already in use EADDRNOTAVAIL: 99: Cannot assign requested ...

  9. Hamming (7,4) - Wikipedia

    en.wikipedia.org/wiki/Hamming(7,4)

    p 1 covers d 1, d 2, d 4; p 2 covers d 1, d 3, d 4; p 3 covers d 2, d 3, d 4; The remaining rows (3, 5, 6, 7) map the data to their position in encoded form and there is only 1 in that row so it is an identical copy. In fact, these four rows are linearly independent and form the identity matrix (by design, not coincidence). Also as mentioned ...