GETDEV(8) Maintenance Commands and Procedures GETDEV(8)

NAME

getdev - lists devices based on criteria

SYNOPSIS

getdev [-ae] [criteria]... [device]...

DESCRIPTION

getdev generates a list of devices that match certain criteria. The
criteria includes a list of attributes (given in expressions) and a
list of devices. If no criteria are given, all devices are included
in the list.


Devices must satisfy at least one of the criteria in the list unless
the -a option is used. Then, only those devices which match all of
the criteria in a list will be included.


Devices which are defined on the command line and which match the
criteria are included in the generated list. However, if the -e
option is used, the list becomes a set of devices to be excluded from
the list. See OPTIONS and OPERANDS.

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 devices which follows on the command
line should be excluded from the list generated by this
command. Without the -e the named devices are included in the
generated list. The flag has no effect if no devices are
defined.

OPERANDS

The following operands are supported:

criteria
Defines the criteria that a device must match to be
included in the generated list. criteria is specified by
expressions.

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

attribute=value
Selects all devices whose attribute
attribute is defined and is equal to
value.


attribute!=value
Selects all devices whose attribute
attribute is defined and does not
equal value.


attribute:*
Selects all devices which have the
attribute attribute defined.


attribute!:*
Selects all devices which do not have
the attribute attribute defined.

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


device
Defines the devices which should be included in the
generated list. This can be the pathname of the device or
the device alias.

EXIT STATUS

The following exit values are returned:

0
Successful completion.


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


2
Device table could not be opened for reading.

FILES

/etc/device.tab

SEE ALSO

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

July 5, 1990 GETDEV(8)