nscd(images) - phpMan

NSCD(8)                    Linux Programmer's Manual                   NSCD(8)

NAME
       nscd - name service cache daemon
DESCRIPTION
       Nscd is a daemon that provides a cache for the most common name service
       requests.  The default configuration file,  /etc/nscd.conf,  determines
       the behavior of the cache daemon.  See nscd.conf(5).
       Nscd  provides  caching  for  accesses  of the passwd(5), group(5), and
       hosts(5) databases through standard libc  interfaces,  such  as  getpw-
       nam(3),  getpwuid(3),  getgrnam(3),  getgrgid(3), gethostbyname(3), and
       others.
       There are two caches for each database: a positive one for items found,
       and  a negative one for items not found.  Each cache has a separate TTL
       (time-to-live) period for its data.   Note  that  the  shadow  file  is
       specifically  not  cached.   getspnam(3)  calls  remain  uncached  as a
       result.
OPTIONS
       --help will give you a list with all options and what they do.
NOTES
       The daemon will try to watch for changes in configuration files  appro-
       priate  for each database (e.g., /etc/passwd for the passwd database or
       /etc/hosts and /etc/resolv.conf for the hosts database), and flush  the
       cache  when  these are changed.  However, this will happen only after a
       short delay (unless the inotify(7) mechanism is available and glibc 2.9
       or later is available), and this auto-detection does not cover configu-
       ration files required by nonstandard NSS modules, if any are  specified
       in  /etc/nsswitch.conf.   In  that  case, you need to run the following
       command after changing the configuration file of the database  so  that
       nscd invalidates its cache:
           $ nscd -i <database>
SEE ALSO
       nscd.conf(5), nsswitch.conf(5)
COLOPHON
       This  page  is  part of release 3.53 of the Linux man-pages project.  A
       description of the project, and information about reporting  bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.

GNU                               2012-05-10                           NSCD(8)