Sendmail, 3rd Edition

Name

nisplus

Synopsis

Sun Microsystems’ NIS+ is a complete redo of its earlier NIS system. The nisplus type allows you to look up information using NIS+. The form of that type declaration looks like this:

Kname nisplus  nismap.domain

Here, the nismap is an NIS+ database-map name, such as mail_aliases.^[13] If the domain or .domain is missing, the nisplus default domain is used. If the entire nismap.domain is missing, the default becomes mail_aliases.org_dir. The domain org_dir contains all the systemwide administration tables.

Any lookup failures that can be retried will automatically be retried up to five times, with a sleep(3) of 2 seconds between each try. If the map.domain doesn’t exist in the local NIS+ system, no error is reported.

Only a modest number of database switches are available for this type. They are listed in Table 23-20.

Table 23-20. The nisplus database-map type K command switches

Switch	§	Description
-a	-a	Append tag on successful match
-D	-D	Don’t use this database map if DeliveryMode=defer
-f	-f	Don’t fold keys to lowercase
-k	-k	Specify column for key or key name
-m	-m	Suppress replacement on match
-o	-o	This database map is optional
-q	-q	Don’t strip quotes from key
-S	-S	Space replacement character
-T	-T	Suffix to append on temporary failure
-t	-t	Ignore temporary errors
-v	-v	Specify the value’s column

You can use the -k switch to specify a key column to look up. Under nisplus, columns are named, so the -k must be followed ...