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nscd (8)

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 caching 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 it is not possible to change non- nscd user to another non-nscd user via su service when nscd is running. OPTIONS --help will give you a list with all options and what they do. NOTES Nscd doesn't know anything about the underlying 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 ALSO nscd.conf(5), nsswitch.conf(5) GNU 1999-10-01 NSCD(8)