ypcat —
print the values of all keys in a NIS database
  
    | ypcat | [ -kst] [-bnum_retry] [-ddomainname] mapname | 
ypcat prints out the values of all keys from the NIS
  database specified by mapname, which may be a map name
  or a map nickname.
The options are as follows:
  - -bnum_retry
- Do not wait infinite time for the ypserver to come up. Retry only the
      specified number of times. See
      yp_setbindtries(3)
      for explanation. The valid range is limited from 0 to 65535 by this
      program.
- -ddomainname
- Specify a domain other than the default domain.
- -k
- Display map keys. This option is useful with maps in which the values are
      null or the key is not part of the value.
- -s
- When printing the value of a key, compress all whitespace characters to a
      single space. Useful when values contain newlines.
- -t
- Inhibit translation of map nicknames to their corresponding map
    names.
- -x
- Display the map nickname table, found in
      /var/yp/nicknames. A built-in default translation
      table is used if /var/yp/nicknames does not exist
      (see nicknames(5) for
      details).