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devfree(1m) [sunos man page]

devfree(1M)						  System Administration Commands					       devfree(1M)

NAME
devfree - release devices from exclusive use SYNOPSIS
devfree key [device...] DESCRIPTION
devfree releases devices from exclusive use. Exclusive use is requested with the command devreserv. When devfree is invoked with only the key argument, it releases all devices that have been reserved for that key. When called with key and device arguments, devfree releases the specified devices that have been reserved with that key. OPERANDS
The following operands are supported: device Defines device that this command will release from exclusive use. device can be the pathname of the device or the device alias. key Designates the unique key on which the device was reserved. EXIT STATUS
The following exit values are returned: 0 Successful completion. 1 Command syntax was incorrect, an invalid option was used, or an internal error occurred. 2 Device table or device reservation table could not be opened for reading. 3 Reservation release could not be completely fulfilled because one or more of the devices was not reserved or was not reserved on the specified key. FILES
/etc/device.tab /etc/devlkfile ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
devreserv(1M), attributes(5) NOTES
The commands devreserv and devfree are used to manage the availability of devices on a system. These commands do not place any con- straints on the access to the device. They serve only as a centralized bookkeeping point for those who wish to use them. Processes that do not use devreserv may concurrently use a device with a process that has reserved that device. SunOS 5.10 5 Jul 1990 devfree(1M)

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putdgrp(1M)						  System Administration Commands					       putdgrp(1M)

NAME
putdgrp - edits device group table SYNOPSIS
putdgrp [-d] dgroup [device...] DESCRIPTION
putdgrp modifies the device group table. It performs two kinds of modification. It can modify the table by creating a new device group or removing a device group. It can also change group definitions by adding or removing a device from the group definition. When the command is invoked with only a dgroup specification, the command adds the specified group name to the device group table if it does not already exist. If the -d option is also used with only the dgroup specification, the command deletes the group from the table. When the command is invoked with both a dgroup and a device specification, it adds the given device name(s) to the group definition. When invoked with both arguments and the -d option, the command deletes the device name(s) from the group definition. When the command is invoked with both a dgroup and a device specification and the device group does not exist, it creates the group and adds the specified devices to that new group. OPTIONS
The following options are supported: -d Delete the group or, if used with device, delete the device from a group definition. OPERANDS
The following operands are supported: dgroup Specify a device group name. device Specify the pathname or alias of the device that is to be added to, or deleted from, the device group. EXIT STATUS
The following exit values are returned: 0 Successful completion. 1 Command syntax was incorrect, an invalid option was used, or an internal error occurred. 2 Device group table could not be opened for reading or a new device group table could not be created. 3 If executed with the -d option, indicates that an entry in the device group table for the device group dgroup does not exist and so cannot be deleted. Otherwise, indicates that the device group dgroup already exists and cannot be added. 4 If executed with the -d option, indicates that the device group dgroup does not have as members one or more of the specified devices. Otherwise, indicates that the device group dgroup already has one or more of the specified devices as members. EXAMPLES
Example 1: Adding a new device group. The following example adds a new device group: example# putdgrp floppies Example 2: Adding a device to a device group. The following example adds a device to a device group: example# putdgrp floppies diskette2 Example 3: Deleting a device group. The following example deletes a device group: example# putdgrp -d floppies Example 4: Deleting a device from a device group. The following example deletes a device from a device group: example# putdgrp -d floppies diskette2 FILES
/etc/dgroup.tab ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ SEE ALSO
listdgrp(1M), putdev(1M), attributes(5) SunOS 5.10 5 Jul 1990 putdgrp(1M)
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