1 .\" Copyright (c) 2005 Michael Bushkov <bushman@rsu.ru>
2 .\" All rights reserved.
4 .\" Redistribution and use in source and binary forms, with or without
5 .\" modification, are permitted provided that the following conditions
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25 .\" $FreeBSD: src/usr.sbin/nscd/nscd.8,v 1.10 2007/09/27 12:30:11 bushman Exp $
32 .Nd "name service caching daemon"
42 is the system caching daemon.
43 It can cache almost all types of data and is basically intended to be used
47 The cache is actually per-user.
48 This means that each user can work only with the
49 cached data that were cached by themselves, and cannot poison the
53 utility supports two types of caching:
54 .Bl -tag -width ".Sy Type"
58 Each cached element is the key+value pair.
59 This type of caching supports policies which are applied when maximum
60 number of cached elements is exceeded.
61 Three policies are available:
63 (first in - first out),
65 (least recently used) and
67 (least frequently used).
68 This type of caching is used with the
72 Each cached element is the part of the elements sequence.
73 This type of caching is intended to be used with the
80 utility is able not only to cache elements, but to perform the actual nsswitch
82 To enable this feature, use the
83 .Va perform-actual-lookups
89 utility recognizes the following runtime options:
90 .Bl -tag -width indent
96 will not fork or disconnect itself from the terminal.
99 Forces using only one thread for all processing purposes (it overrides
107 All trace messages will be written to stdout.
108 This mode is usually used with
112 flags are used for debugging purposes.
113 .It Fl i Ar cachename
114 Invalidates personal cache.
117 acts as the administration tool.
118 It asks the already running
120 to invalidate the specified part of the cache of the
122 For example, sometimes you may want to invalidate your
129 to invalidate your personal cache as a whole.
130 You cannot use this option for the
133 .Va perform-actual-lookups
135 .It Fl I Ar cachename
136 Invalidates the cache for every user.
139 acts as the administration tool.
143 to invalidate the specified part of the cache for
149 to invalidate the whole cache.
150 Only the root can use this option.
153 .Bl -tag -width ".Pa /etc/nscd.conf" -compact
154 .It Pa /etc/nscd.conf
155 The default configuration file.
162 .An Michael Bushkov Aq bushman@freebsd.org
164 Please send bug reports and suggestions to
165 .Aq bushman@freebsd.org .