netgroup(5) [netbsd man page]

NETGROUP(5)						      BSD File Formats Manual						       NETGROUP(5)

NAME

     netgroup -- defines network groups

SYNOPSIS

     netgroup

DESCRIPTION

     The netgroup file specifies ``netgroups'', which are sets of (host, user, domain) tuples that are to be given similar network access.

     Each line in the file consists of a netgroup name followed by a list of the members of the netgroup.  Each member can be either the name of
     another netgroup or a specification of a tuple as follows:

	   (host, user, domain)

     where the host, user, and domain are character string names for the corresponding component.  Any of the comma separated fields may be empty
     to specify a ``wildcard'' value or may consist of the string ``-'' to specify ``no valid value''.	The members of the list may be separated
     by whitespace; the ``'' character may be used at the end of a line to specify line continuation.	The functions specified in getnetgrent(3)
     should normally be used to access the netgroup database.

     If 'files' is specified for the 'netgroup' database in nsswitch.conf(5), (or no 'netgroup' entry is specified), then these functions operate
     on the db(3) version of the netgroup (netgroup.db) file which can be generated using netgroup_mkdb(8).  If 'nis' is specified then the NIS
     maps 'netgroup', 'netgroup.byhost', and 'netgroup.byuser' are used.

     Lines that begin with a # are treated as comments.

FILES

     /etc/netgroup.db  the netgroup database.

SEE ALSO

     getnetgrent(3), exports(5), nsswitch.conf(5), netgroup_mkdb(8)

COMPATIBILITY

     The file format is compatible with that of various vendors, however it appears that not all vendors use an identical format.

BUGS

     The interpretation of access restrictions based on the member tuples of a netgroup is left up to the various network applications.

BSD
								 January 16, 1999							       BSD

netgroup(5yp)															     netgroup(5yp)

Name
       netgroup - list of network groups

Description
       The  file  defines network-wide groups used for permission checking when doing remote mounts, remote logins, and remote shells.	For remote
       mounts, the information in the file is used to classify machines; for remote logins and remote shells, it is used to classify users.   Each
       line of the file defines a group and has the following format:

       groupname member1,...,member_n

       Each member is either another group name or a combination of the host name, user name, and domain name.

       Any  of	the three fields can be empty, in which case a wildcard is assumed.  For example, to define a group to which everyone belongs, the
       following entry could appear in the file:
       universal (,,)

       Field names that begin with something other than a letter, digit, or underscore (such as ``-'') work in the opposite way.  For example:
       justmachines   (analytica,-,suez)
       justpeople     (-,babbage,suez)

       The machine analytica belongs to the group justmachines in the domain suez, but no users belong to it.  Similarly, the user babbage belongs
       to the group justpeople in the domain suez, but no machines belong to it.

       Network groups are part of the Yellow Pages data base and are accessed through these files:

       /etc/yp/domainname/netgroup.dir
       /etc/yp/domainname/netgroup.pag
       /etc/yp/domainname/netgroup.byuser.dir
       /etc/yp/domainname/netgroup.byuser.pag
       /etc/yp/domainname/netgroup.byhost.dir
       /etc/yp/domainname/netgroup.byhost.pag

       These files can be created from using

Files
       /etc/netgroup
       /etc/yp/domainname/netgroup.dir
       /etc/yp/domainname/netgroup.pag
       /etc/yp/domainname/netgroup.byuser.dir
       /etc/yp/domainname/netgroup.byuser.pag
       /etc/yp/domainname/netgroup.byhost.dir
       /etc/yp/domainname/netgroup.byhost.pag

See Also
       getnetgrent(3yp), makedbm(8yp), ypserv(8yp)

																     netgroup(5yp)