NAME

       revnetgroup - generate reverse netgroup data

SYNOPSIS

       /usr/lib/yp/revnetgroup [-u|-h]

DESCRIPTION

       Revnetgroup processes the standard input in netgroup(5) format into what is called reverse netgroup form.
       That  is,  where  the  original  file  shows  netgroup  memberships in terms of which members reside in a
       particular group, the reverse netgroup format specifies what groups  are  associated  with  a  particular
       member.  This  information  is  used to generate the netgroup.byuser and netgroup.byhosts NIS maps. These
       reverse netgroup maps are used to help speed up netgroup lookups, particularly for  the  innetgr  library
       function.

       The  revnetgroup  command  prints  its  results  on  the  standard  output.  It is usually called only by
       /var/yp/Makefile when rebuilding the NIS netgroup maps.

OPTIONS

       The revnetgroup command supports the following options:

       -u     Generate netgroup.byuser output; only username  information  in  the  original  netgroup  file  is
              processed.

       -h     Generate  netgroup.byhost  output;  only  hostname  information  in  the original netgroup file is
              processed.

       Note at least one of the both flags must be specified.

FILES

       /var/yp/Makefile    The Makefile to build the NIS databases
       /etc/netgroup       the default netgroup database file. This file is most often found  only  on  the  NIS
                           master server

SEE ALSO

       getnetgrent(3), netgroup(5),

AUTHOR

       revnetgroup was written by Thorsten Kukuk <kukuk@suse.de>.

YP Server                                          August 2001                                    REVNETGROUP(8)