getdgrp(1M) getdgrp(1M)
NAME
getdgrp - lists device groups which contain devices that match
criteria
SYNOPSIS
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.
criteria can be one 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 is given, all device groups are included
in the list.
Devices must satisfy at least one of the criteria in the list.
However, the -a flag 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.
dgroup defines a set of device groups to be included in the list.
Device groups that are defined and which contain devices matching the
criteria are included. However, if the -e flag 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.
Criteria Expression Types
There are four possible expressions types:
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 the putdev(1M) manual page for a complete
listing and description of available attributes.
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getdgrp(1M) getdgrp(1M)
Options and Arguments
The options and arguments for this command are:
-a Specifies that a device must match all criteria
before a device group to which it belongs can be
included in the list generated by this command.
The flag 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 the
named device groups are the only ones which can be
included in the generated list.) The flag has no
effect if no device groups 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.
criteria Defines criteria that a device must match before a
device group to which it belongs can be included in
the generated list.
dgroup Defines device groups which should be included in
or excluded from the generated list.
ERRORS
The command will exit with one of the following values:
0 = successful completion of the task.
1 = command syntax incorrect, invalid option used, or 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
devattr(1), getdev(1), putdev(1), putdgrp(1), getdgrp(3X).
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