ypclear - Windows command-line utility to clear the Network Information Service (NIS) server cache for an NIS map and its dependent maps


ypclear [-d domainName] [-t] [-h nisServer] mapname
ypclear -x


The ypclear(1w) Windows command-line utility tells the specified Network Information Service (NIS) server in a specified domain that a map has changed and that the server should clear its cache. Without this notification, the NIS server can sometimes serve out-of-date information.

The ypclear command can be used to rebuild the map cache of an NIS server that still displays obsolete map data, even when Active Directory shows a current and accurate map of the network. Typically, using ypclear corrects the problem.

The ypclear command accepts the following options and arguments:

Term Definition

-d domain

Specifies the NIS domain. If this option is not used, the NIS domain is assumed to be the domain named in the DEFAULT_NIS_DOMAIN environment variable.


Inhibits map nickname translation.

-h nisServer

Specifies the name of the NIS server. If this option is not used, the NIS server is assumed to be the server named in the NIS_SERVER environment variable.


Displays the map nickname translation table.

See Also