The OpenNET Project / Index page

[ новости /+++ | форум | теги | ]

Интерактивная система просмотра системных руководств (man-ов)

 ТемаНаборКатегория 
 
 [Cписок руководств | Печать]

rngd (8)
  • >> rngd (8) ( Linux man: Команды системного администрирования )
  •  

    NAME

    rngd - Check and feed random data from hardware device to kernel random device
    

     

    SYNOPSIS

    rngd [-b, --background] [-f, --foreground] [-o, --random-device=file] [-r, --rng-device=file] [-s, --random-step=nnn] [-W, --fill-watermark=nnn] [-t, --timeout=nnn] [-?, --help] [-V, --version]  

    DESCRIPTION

    This daemon feeds data from a random number generator to the kernel's random number entropy pool, after first checking the data to ensure that it is properly random.

    The -f or --foreground options can be used to tell rngd to avoid forking on startup. This is typically used for debugging. The -f or --foreground options, which fork and put rngd into the background automatically, are the default.

    The -r or --rng-device options can be used to select an alternate source of input, besides the default /dev/hwrandom. The -o or --random-device options can be used to select an alternate entropy output device, besides the default /dev/random. Note that this device must support the Linux kernel /dev/random ioctl API.

    FIXME: document random-step and timeout

     

    OPTIONS

    -b, --background
    Become a daemon (default)
    -f, --foreground
    Do not fork and become a daemon
    -o file, --random-device=file
    Kernel device used for random number output (default: /dev/random)
    -r file, --rng-device=file
    Kernel device used for random number input (default: /dev/hwrandom)
    -s nnn, --random-step=nnn
    Number of bytes written to random-device at a time (default: 64)
    -W n, --fill-watermark=nnn
    Once we start doing it, feed entropy to random-device until at least fill-watermark bits of entropy are available in its entropy pool (default: 2048). Setting this too high will cause rngd to dominate the contents of the entropy pool. Low values will hurt system performance during entropy starves. Do not set fill-watermark above the size of the entropy pool (usually 4096 bits).
    -t nnn, --timeout=nnn
    Interval written to random-device when the entropy pool is full, in seconds, or 0 to disable (default: 60)
    -?, --help
    Give a short summary of all program options.
    -V, --version
    Print program version

     

    AUTHORS

    Philipp Rumpf
    Jeff Garzik - [email protected]
    Matt Sottek


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    OPTIONS
    AUTHORS


    Поиск по тексту MAN-ов: 




    Партнёры:
    PostgresPro
    Inferno Solutions
    Hosting by Hoster.ru
    Хостинг:

    Закладки на сайте
    Проследить за страницей
    Created 1996-2024 by Maxim Chirkov
    Добавить, Поддержать, Вебмастеру