GETDGRP(8) Maintenance Procedures GETDGRP(8)

NAME

getdgrp - lists device groups which contain devices that match criteria

SYNOPSIS

/usr/sbin/getdgrp [-ael] [criteria]... [dgroup]...

DESCRIPTION

getdgrp generates a list of device groups that contain devices matching
the given criteria. The criteria is given in the form of expressions.

OPTIONS

The following options are supported:

-a
Specifies that a device must match all criteria to be included in
the list generated by this command. The option has no effect if no
criteria are defined.


-e
Specifies that the list of device groups on the command line should
be excluded from the list generated by this command. Without the
-e option the named device groups are included in the generated
list. The flag has no effect if no devices are defined.


-l
Specifies that all device groups (subject to the -e option and the
dgroup list) should be listed even if they contain no valid device
members. This option has no affect if criteria is specified on the
command line.

OPERANDS

The following operands are supported:

criteria
Defines criteria that a device must match before a device
group to which it belongs can be included in the generated
list. Specify criteria as an expression or a list of
expressions which a device must meet for its group to be
included in the list generated by getdgrp. If no criteria
are given, all device groups are included in the list.

Devices must satisfy at least one of the criteria in the
list. However, the -a option can be used to define that a
"logical and" operation should be performed. Then, only
those groups containing devices which match all of the
criteria in a list will be included.

There are four possible expressions types which the criteria
specified in the criteria argument may follow:

attribute=value
Selects all device groups with a member
whose attribute attribute is defined and
is equal to value.


attribute!=value
Selects all device groups with a member
whose attribute attribute is defined and
does not equal value.


attribute:*
Selects all device groups with a member
which has the attribute attribute
defined.


attribute!:*
Selects all device groups with a member
which does not have the attribute
attribute defined.

See putdev(8) for a complete listing and description of
available attributes.


dgroup
Defines a set of device groups which should be included in or
excluded from the generated list. Device groups that are
defined and which contain devices matching the criteria are
included.

If the -e option is used, this list defines a set of device
groups to be excluded. When the -e option is used and
criteria is also defined, the generated list will include
device groups containing devices which match the criteria and
are not in the command line list.

EXIT STATUS

The following exit values are returned:

0
Successful completion of the task.


1
Command syntax was incorrect, invalid option was used, or an
internal error occurred.


2
Device table or device group table could not be opened for reading.

FILES

/etc/device.tab


/etc/dgroup.tab

SEE ALSO

attributes(7), devattr(8), getdev(8), putdev(8), putdgrp(8)


July 5, 1990 GETDGRP(8)