putdev(1) UNIX System V(Essential Utilities) putdev(1)
NAME
putdev - edits device table
SYNOPSIS
putdev -a alias [attribute=value [...]]
putdev -m device attribute=value [attribute=value [...]]
putdev -d device [attribute [...]]
DESCRIPTION
putdev can add a new device to the device table, modify an existing
device description or remove a device entry from the table. The first
synopsis is used to add a device. The second synopsis is used to modify
existing entries by adding or changing attributes. If a specified
attribute is not defined, this option adds that attribute to the device
definition. If it is already defined, it modifies the attribute
definition. The third synopsis is used to delete either an entire device
entry or, if the attribute argument is used, to delete an attribute
assignment for a device.
The options and arguments for this command are:
-a Adds a device to the device table using the specified
attributes. The device must be referenced by its alias.
-m Modifies a device entry in the device table. If an entry
already exists, it adds any specified attributes that are not
defined. It also modifies any attributes which already have a
value with the value specified with this command.
-d Removes a device from the device table, when executed without
the attributes argument. Used with the attribute argument, it
deletes the given attribute specification for device from the
table.
alias Designates the alias of the device to be added.
device Designates the pathname or alias of the device whose attribute
is to be added, modified, or removed.
attribute Designates a device attribute to be added or modified. Can be
any of the device attributes described under NOTES except
alias. This prevents an accidental modification or deletion of
a device's alias from the table.
value Designates the value to be assigned to a device's attribute.
NOTES
The following list shows all of the attributes which can be defined for a
device:
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putdev(1) UNIX System V(Essential Utilities) putdev(1)
alias The unique name by which a device is known. No two
devices in the database may share the same alias name.
The name is limited in length to 14 characters and should
contain only alphanumeric characters and also the
following special characters if they are escaped with a
backslash: underscore (_), dollar sign ($), hyphen (-),
and period (.).
bdevice The pathname to the block special device node associated
with the device, if any. The associated major/minor
combination should be unique within the database and
should match that associated with the cdevice field, if
any. (It is the administrator's responsibility to ensure
that these major/minor numbers are unique in the
database.)
capacity The capacity of the device or of the typical volume, if
removable.
cdevice The pathname to the character special device node
associated with the device, if any. The associated
major/minor combination should be unique within the
database and should match that associated with the bdevice
field, if any. (It is the administrator's responsibility
to ensure that these major/minor numbers are unique in the
database.)
cyl Used by the command specified in the mkfscmd attribute.
desc A description of any instance of a volume associated with
this device (such as floppy diskette).
dpartlist The list of disk partitions associated with this device.
Used only if type=disk. The list should contain device
aliases, each of which must have type=dpart.
dparttype The type of disk partition represented by this device.
Used only if type=dpart. It should be either fs (for
filesystem) or dp (for data partition).
erasecmd The command string that, when executed, erases the device.
fmtcmd The command string that, when executed, formats the
device.
fsname The filesystem name on the file system administered on
this partition, as supplied to the /usr/sbin/labelit
command. This attribute is specified only if type=dpart
and dparttype=fs.
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putdev(1) UNIX System V(Essential Utilities) putdev(1)
gap Used by the command specified in the mkfscmd attribute.
mkfscmd The command string that, when executed, places a file
system on a previously formatted device.
mountpt The default mount point to use for the device. Used only
if the device is mountable. For disk partitions where
type=dpart and dparttype=fs, this attribute should specify
the location where the partition is normally mounted.
nblocks The number of blocks in the filesystem administered on
this partition. Used only if type=dpart and dparttype=fs.
ninodes The number of inodes in the filesystem administered on
this partition. Used only if type=dpart and dparttype=fs.
norewind The name of the character special device node that allows
access to the serial device without rewinding when the
device is closed.
pathname Defines the pathname to an i-node describing the device
(used for non-block or character device pathnames, such as
directories).
type A token that represents inherent qualities of the device.
Standard types include: 9-track, ctape, disk, directory,
diskette, dpart, and qtape.
volname The volume name on the filesystem administered on this
partition, as supplied to the /usr/sbin/labelit command.
Used only if type=dpart and dparttype=fs.
volume A text string used to describe any instance of a volume
associated with this device. This attribute should not be
defined for devices which are not removable.
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 could not be opened for reading or new device table
could not be created.
3 = if executed with the -a option, indicates that an entry in the device
table with the alias alias already exits. If executed with the -m or
-d options, indicates that no entry exists for device device.
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putdev(1) UNIX System V(Essential Utilities) putdev(1)
4 = indicates that -d was requested and one or more of the specified
attributes were not defined for the device.
FILES
/etc/device.tab
SEE ALSO
devattr(1), putdgrp(1M).
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