GETDEV(8) Maintenance 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.tabSEE ALSO
attributes(7),
devattr(8),
getdgrp(8),
putdev(8),
putdgrp(8) July 5, 1990
GETDEV(8)