man/man5/netid.5

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 NETID 5 "November 22, 2021"
 NAME
netid - netname database
 SYNOPSIS
/etc/netid


 DESCRIPTION
The netid file is a local source of information on mappings between
netnames (see secure_rpc(3NSL)) and user ids or hostnames in the local
domain. The netid file can be used in conjunction with, or instead of,
a network nameservice. The publickey entry in
the nsswitch.conf (see nsswitch.conf(5)) file determines which of
these sources will be queried by the system to translate netnames to local user
ids or hostnames.

Each entry in the netid file is a single line of the form:
netname uid:gid, gid, gid\|.\|.\|.


or
netname  0:hostname


The first entry associates a local user id with a netname. The second entry
associates a hostname with a netname.

The netid file field descriptions are as follows:
netname

The operating system independent network name for the user or host.
netname has one of two formats. The format used to specify a host is of
the form:
unix.hostname@domain
where hostname is the name of the host and domain is the network
domain name.
The format used to specify a user id is of the form:
unix.uid@domain
where uid is the numerical id of the user and domain is the network
domain name.


uid

The numerical id of the user (see passwd(5)). When specifying a host
name, uid is always zero.


group

The numerical id of the group the user belongs to (see group(5)).
Several groups, separated by commas, may be listed for a single uid.


hostname

The local hostname (see hosts(5)).


Blank lines are ignored. Any part of a line to the right of a `#' symbol
is treated as a comment.
 EXAMPLES
Example 1 A sample netid file.

Here is a sample netid file:

unix.789@West.Example.COM 789:30,65
unix.123@Bldg_xy.Example.COM 123:20,1521
unix.candlestick@campus1.example.NET 0:candlestick


 FILES
/etc/group

groups file


/etc/hosts

hosts database


/etc/netid

netname database


/etc/passwd

password file


/etc/publickey

public key database


 SEE ALSO
 netname2user (3NSL),  secure_rpc (3NSL),  group (5),  hosts (5),  nsswitch.conf (5),  passwd (5),  publickey (5)