NSCD(8) Linux Programmer's Manual NSCD(8)NAME
/usr/sbin/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 cacheing 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. As a result of this behavior there is not possible to change
non-nscd user to another non-nscd user via su service when nscd is run‐
ning.
OPTIONS--help will give you a list with all options and what they do.
NOTES
Nscd doesn't know anything about the underlaying protocols for a ser‐
vice. This also means, that if you change /etc/resolv.conf for DNS
queries, nscd will continue to use the old one if you have configured
/etc/nsswitch.conf to use DNS for host lookups. In such a case, you
need to restart nscd.
SEE ALSOnscd.conf(5), nsswitch.conf(5)AUTHORnscd was written by Thorsten Kukuk and Ulrich Drepper.
GNU C Library 1999-10 NSCD(8)
