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Reports the status of input/output devices. Syntax | |
SHOWDEV [ ldev classname ] [;ACD] Parameters | |
- ldev
Logical device number of device for which status
information is to be displayed. This number is unique for each device.
Default is that status information for all system devices on the
system is displayed. - classname
Device class name of device(s) for which status
information is to be displayed. This name may apply to several devices.
Default is that status information for all devices on the system
is displayed. - ACD
Keyword requesting display of ACD (access control
definition) for the device.
Operation Notes | |
The SHOWDEV
command displays the status information for all input and output
devices on the system. The display spacing is important and has
been changed after the 4.7 release. The display appears in the following
format: SHOWDEV
Total number of blanks between items after release 4.7
5 9 9 9 3
LDEV AVAIL OWNERSHIP VOLID DEN ASSOCIATION
1 DISC N/A
2 DISC N/A
3 DISC N/A
4 DISC N/A
5 AVAIL
6 SPOOLED SPOOLER OUT
7 AVAIL
8 AVAIL
9 AVAIL
10 A AVAIL
11 DISC N/A
12 DISC N/A
13 DISC N/A
14 DISC N/A
15 DISC N/A
16 DISC N/A
17 AVAIL
18 AVAIL
19 SPOOLED
20 A UNAVAIL #S914: 8 FILES
21 A AVAIL |
- COLUMN
MEANING - LDEV
Includes the logical device number and may 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. - AVAIL W
The device is a tape with write enable on the media. - SPOOLED
The device is available for input or output spooling. - UNAVAIL
The device is not available; it is under the control
of a job, 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
Includes device ownership and may include one of
the following: - SYS
Controlled by the system. If #nnn
appears, it specifies the process identification number (PIN) of
the controlling process (program). - SPOOLER IN
Input spooling in effect, controlled by spooler. - SPOOLER OUT
Output spooling in effect, controlled by spooler. - #Jnnn
Controlled by the indicated job. - #Snnn
Controlled by the indicated session. - nn FILES
Indicates number of files currently in use on a
disk. - DOWN
Device is offline, requested by system operator
with the DOWN
command. - DP
Device is being taken offline (DOWN
command operation pending).
- VOLID
The volume identification and may include one of
the following: - IBM
The named magnetic tape volume that has a label
written in the IBM format. - ANSI
The named magnetic tape volume that has a label. - NOLABEL
The named magnetic tape volume that has no label.
Default.
- DEN
Density of the tape, which may include one of the
following: - 6250
Density of 6250 BPI (bytes-per-inch). - 1600
Density of 1600 BPI, or the density of the tape
is unrecognizable.
- ASSOCIATION
Indicates the logical devices by device class that
have been established by the user with the ASSOCIATE
command. - ACD
Access Control Definition. May include any of the
following information per username.acctname: - R
READ access. - W
WRITE access. - L
LOCK access. - A
APPEND access. - X
EXECUTE access. - NONE
NO access. - RACD
Copy or read the ACD.
Use | |
This command may be issued from a session, job, program, or
in BREAK. Pressing Break aborts
the execution of this 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 |
To display the status of all devices of the device class CARD,
enter: SHOWDEV CARD
LDEV AVAIL OWNERSHIP VOLID DEN ASSOCIATION
6 A AVAIL |
Related Information | |
- Commands
DISCRPS,
ABORTIO - Manuals
Performing System Operation Tasks
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