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nscd (8)
  • nscd (1) ( Solaris man: Команды и прикладные программы пользовательского уровня )
  • >> nscd (8) ( FreeBSD man: Команды системного администрирования )
  • nscd (8) ( Русские man: Команды системного администрирования )
  • nscd (8) ( Linux man: Команды системного администрирования )

  • BSD mandoc
     

    NAME

    
    
    nscd
    
     - name service caching daemon
    
     
    

    SYNOPSIS

    [-dnst ] [-i cachename ] [-I cachename ]  

    DESCRIPTION

    The utility is the system caching daemon. It can cache almost all types of data and is basically intended to be used with the nsswitch subsystem. The cache is actually per-user. This means that each user can work only with the cached data that were cached by themselves, and cannot poison the cache of other users. The utility supports two types of caching:

    Type
    Description
    Common caching
    Each cached element is the key+value pair. This type of caching supports policies which are applied when maximum number of cached elements is exceeded. Three policies are available: FIFO (first in - first out), LRU (least recently used) and LFU (least frequently used). This type of caching is used with the getXXXbyname ();
    family of functions.
    Multipart caching
    Each cached element is the part of the elements sequence. This type of caching is intended to be used with the getXXXent ();
    family of functions.

    The utility is able not only to cache elements, but to perform the actual nsswitch lookups by itself. To enable this feature, use the perform-actual-lookups parameter in nscd.conf5.

    The utility recognizes the following runtime options:

    -n
    Do not daemonize; will not fork or disconnect itself from the terminal.
    -s
    Single-threaded mode. Forces using only one thread for all processing purposes (it overrides the threads parameter in the nscd.conf5 file).
    -t
    Trace mode. All trace messages will be written to stdout. This mode is usually used with -n and -s flags are used for debugging purposes.
    -i cachename
    Invalidates personal cache. When specified, acts as the administration tool. It asks the already running to invalidate the specified part of the cache of the calling user. For example, sometimes you may want to invalidate your ``hosts '' cache. You can specify ``all '' as the cachename to invalidate your personal cache as a whole. You cannot use this option for the cachename for which the perform-actual-lookups option is enabled.
    -I cachename
    Invalidates the cache for every user. When specified, acts as the administration tool. It asks the already running to invalidate the specified part of the cache for every user. You can specify ``all '' as the cachename to invalidate the whole cache. Only the root can use this option.

     

    FILES

    /etc/nscd.conf
    The default configuration file.

     

    SEE ALSO

    nsdispatch(3), nscd.conf5, nsswitch.conf5  

    AUTHORS

    An Michael Bushkov Aq bushman@freebsd.org  

    BUGS

    Please send bug reports and suggestions to Aq bushman@freebsd.org .


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    FILES
    SEE ALSO
    AUTHORS
    BUGS


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