Invokes the Show Cluster utility to monitor and display cluster
    activity and performance.

    For more information about the Show Cluster utility, see the VSI
    OpenVMS System Management Utilities Reference Manual.

    Format

      SHOW CLUSTER

    If you specify the command without any qualifiers, SHOW CLUSTER
    displays a single cluster report and then returns control to the
    DCL level.

    To invoke a continuous SHOW CLUSTER display, enter the following
    command:

    $ SHOW CLUSTER/CONTINUOUS

    SHOW CLUSTER requires no special privileges because it is
    installed with the CMKRNL privilege.

    In a continuous display, you can control report output with SHOW
    CLUSTER commands. For information about SHOW CLUSTER commands,
    invoke a continuous SHOW CLUSTER display, enter Return to get to
    the Command> prompt, and then enter HELP.

1  –  Qualifiers

1.1    /BEGINNING

       /BEGINNING=time

    Specifies the time that the SHOW CLUSTER session is to begin. You
    can specify absolute time, a delta time, or a combination of the
    two. Observe the syntax rules for time values described in the
    OpenVMS User's Manual or the online help topic Date.

    If you specify a future time, your process is placed in a state
    of hibernation until the specified time. Use this qualifier with
    the /OUTPUT and /ENDING qualifiers to run SHOW CLUSTER without
    direct user intervention.

    You can specify time as absolute time expressed as
    [dd-mmm-yyyy[:]] [hh:mm:ss.cc], or a delta time expressed as
    [dddd-][hh:mm:ss.cc], or a combination of the two. Observe the
    syntax rules for time values described in the OpenVMS User's
    Manual or the online help topic Date.

1.2    /CONTINUOUS

    Specifies a continuously updating display. If you omit the
    qualifier, SHOW CLUSTER produces a single display and returns
    control to the DCL command level.

    Running SHOW CLUSTER in the continuous mode allows you to use
    SHOW CLUSTER commands to control the display. In a continuous
    display, you can control report output with SHOW CLUSTER
    commands. For information about the SHOW CLUSTER commands, invoke
    a continuous SHOW CLUSTER display and type HELP at the Command>
    prompt.

    SHOW CLUSTER has commands that allow you to customize the
    display. You can add and remove fields and classes, rearrange
    the position of windows, scroll their contents, or create
    an initialization or command procedure that can recreate a
    particular window setup.

    To exit from a continuous display and return to the DCL level,
    type the EXIT command or press Ctrl/Z.

    To exit from SHOW CLUSTER without erasing the screen, press
    Ctrl/C.

    To interrupt SHOW CLUSTER, press Ctrl/Y.

    For a complete description of the Show Cluster utility and
    commands, see the VSI OpenVMS System Manager's Manual for overview
    information and the VSI OpenVMS System Management Utilities
    Reference Manual for reference information.

1.3    /ENDING

       /ENDING=time

    Specifies the time that the SHOW CLUSTER session is to end. You
    can specify an absolute time, a delta time, or a combination of
    the two. Observe the syntax rules for time values described in
    the OpenVMS User's Manual or the online help topic Date.

    Use this qualifier with the /BEGINNING and /OUTPUT qualifiers to
    run SHOW CLUSTER without direct user intervention.

    You can specify time as absolute time expressed as [dd-mmm-
    yyyy[:]][hh:mm:ss.cc], or a delta time expressed as [dddd-
    ][hh:mm:s.cc], or a combination of the two. Observe the syntax
    rules for time values described in the OpenVMS User's Manual or
    the online help topic Date.

1.4    /INTERVAL

       /INTERVAL=seconds

    Specifies the number of seconds that display information remains
    on the screen before it is updated. By default, the interval time
    is 15 seconds.

    If you use an initialization file in noncontinuous mode and the
    initialization file contains a SET SCREEN command that changes
    the screen size, SHOW CLUSTER sets the screen to the specified
    size for one update interval and then sets the screen to the
    original size.

1.5    /OUTPUT

       /OUTPUT=filespec

    Directs the output from SHOW CLUSTER to the specified file
    instead of the current SYS$OUTPUT device.

    SHOW CLUSTER output is always in printable file format,
    regardless of the file or device type specified. Output can be
    up to 132 columns wide and can be sent to any file, terminal, or
    print device.

    You can also direct output to a file with the WRITE command.

    The filespec is the name of the file or device to which SHOW
    CLUSTER output is directed. The default file name is SHOW_
    CLUSTER.LIS.

    You can direct output to a device other than SYS$OUTPUT, by
    specifying a valid device name.