| NSCD(8) | MidnightBSD System Manager's Manual | NSCD(8) |
nscd — name
service caching daemon
nscd |
[-dnst] [-i
cachename] [-I
cachename] |
The nscd 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 nscd utility supports two types of
caching:
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.getXXXent()
family of functions.The nscd 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.conf(5).
The nscd utility recognizes the following
runtime options:
-nnscd will not fork or disconnect
itself from the terminal.-s-t-n and
-s flags are used for debugging purposes.-i
cachenamenscd
acts as the administration tool. It asks the already running
nscd 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
cachenamenscd acts as the administration tool. It asks the
already running nscd 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.Michael Bushkov <bushman@FreeBSD.org>
| October 5, 2018 | midnightbsd-3.1 |