Briefly, nscd is a daemon which handles passwd, group and host lookups for running programs and caches the results for the next query. You should use nscd only if you use slow Services like LDAP, NIS or NIS+


nscd - name service caching daemon


nscd [OPTION...?


Nscd caches libc-issued requests to the Name Service. If retrieving NSS data is fairly expensive, nscd is able to speed up consecutive access to the same data dramatically and increase overall system performance. Nscd should be run at boot time by /etc/init.d/nscd.


-d, --debug
Do not fork and display messages on the current tty.
-f, --config-file NAME
Read configuration data from NAME.
-g, --statistic
Print current configuration statistic.
-i, --invalidate TABLE
Invalidate the specified TABLE, i. e. forget all data cached therein. This should be used if the database storing this information has been changed.
-K, --shutdown
Quit a running nscd process.
-S, --secure TABLE
Use a separate cache for each user.
-t, --nthreads NUMBER
Start NUMBER threads. The number of threads started denotes that maximum number of requests that can be handled simultaneously. The default is set in the configuration file. (See nscd.conf(5).)
-?, --help
Print a short help list.
Print a short usage message.
-V, --version
Print program version.


Nscd configuration file. See nscd.conf(5) for more information.
Name Service Switch configuration. See nsswitch.conf(5) for more information.


GNU C Library info file, nscd.conf(5), nsswitch.conf(5)

GNU C Library 2.2 January 07, 2001

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