Section: Linux Programmer's Manual (8)
Return to Main Contents
/usr/sbin/nscd - name service cache daemon
Nscd is a daemon that provides a cache for the most common name service
requests. The default configuration file,
determines the behavior of the cache daemon. See
Nscd provides cacheing for accesses of the
databases through standard libc interfaces, such as
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.
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 running.
will give you a list with all options and what they do.
Nscd doesn't know anything about the underlaying protocols for a
service. This also means, that if you change
for DNS queries, nscd will continue to use the old one if you have
to use DNS for host lookups. In such a case, you need to restart
was written by Thorsten Kukuk and Ulrich Drepper.
- SEE ALSO
linux.jgfs.net manual pages