Obtaining map information

Users can obtain information from and about the NIS maps at any time by using the commands ypcat(1nis), ypwhich(1nis), and ypmatch(1nis). In the examples that follow, mapname refers to the official name of the map or to its alias, if any. The examples are not exhaustive, and you should consult the respective manual pages for these commands for additional information.

• To list all the values contained in a map, enter:
  
  ypcat mapname

• To list both the keys and the values (if any) contained in a map, enter:
  
  ypcat -k mapname

• To list all the map aliases, enter any of:
  
  ypcat -x
  ypwhich -x
  ypmatch -x

• To list all the available maps and their master(s), enter:
  
  ypwhich -m

• To list the master server for a particular map, enter:
  
  ypwhich -m mapname

• To match a key with an entry in a map, enter:
  
  ypmatch key mapname

• If the item you are looking for is not a key in a map, enter:
  
  ypcat mapname | grep pattern

To obtain information about other domains, use the -d option with these commands.