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The SHOWDEV command displays status information for all input and
output devices on the system. Syntax | |
Parameters | |
- ldev
Specifies the logical device number of the device for which
status information is to be displayed. This number is unique for each device.
Without this parameter or the classname parameter, the system displays
status information for all devices on the system.
- classname
Specifies the class name of device(s) for which status
information is to be displayed. This name can apply to several devices.
Without this parameter or the ldev parameter, the system displays
status information for all devices on the system.
Operation Notes | |
Usage
You can enter this command from a session, a job, a program, or in
break mode. Pressing Break aborts the execution of this command.
Command field descriptions
When you enter the SHOWDEV command, the display appears in the following
format:
LDEV AVAIL OWNERSHIP VOLID DEN ASSOCIATION
1 DISC 43 FILES
6 SPOOLED SPOOLER OUT
8 AVAIL
20 A UNAVAIL #S311: 7 FILES
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Definitions for each of the column fields are as follows: - LDEV
Specifies the logical device number and can include one of the following: - J
Accepts jobs. - D
Accepts data. - A
Accepts jobs and data.
- AVAIL
Lists the availability of devices and disks as follows: - AVAIL
The device is available as a real, nonshareable device. - SPOOLED
The device is available for input or output spooling. - UNAVAIL
The device is unavailable; it is controlled by a job, a session, or a system process, such as a spooler. - DISC
The device is a disk and is always available. - DISC (RPS)
The device is a CS-80 disk on which rotational position sensing (RPS) has been enabled.
- OWNERSHIP
Specifies device ownership and can include one of the following: - SYS
The system controls ownership. If #nnn appears, it specifies the process identification number (PIN) of the controlling process (program). - SPOOLER IN
The input spooler controls ownership. - SPOOLER OUT
The output spooler controls ownership. - Jnnn
The indicated job controls ownership. - Snnn
The indicated session controls ownership. - nn FILES
nn number of files are currently in use on a disk. - DOWN
The device is offline as requested by the system administrator with the DOWN command. - DP
The device is being taken offline. (A DOWN command operation is pending.)
- VOLID
Specifies the volume identification and can include one of the following: - IBM
The named magnetic tape volume has a label written in the IBM format. - ANSI
The named magnetic tape volume has a label. - NOLABEL
The named magnetic tape volume has no label. This is the default.
- DEN
Specifies the tape density and can include one of the following: - 6250
The density is 6250 bytes-per-inch (BPI). - 1600
The density is 1600 BPI, or the density of the tape is unrecognizable.
- ASSOCIATION
Specifies the logical devices by device class that the system administrator has established with the ASSOCIATE command.
Examples | |
To display the status of the device identified by logical device number
5, enter:
:SHOWDEV 5
LDEV AVAIL OWNERSHIP VOLID DEN ASSOCIATION
5 SPOOLED SPOOLER OUT
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To display the status of all devices of the device class CARD, enter:
:SHOWDEV CARD
LDEV AVAIL OWNERSHIP VOLID DEN ASSOCIATION
6 A AVAIL
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Related Commands | |
ASSOCIATE
DOWN
SHOWJOB
SHOWPROC
SPOOLER
UP
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