Cascade DataHub: Version 4.0
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readpt

readpt -- reads a point from the Cascade DataHub.

Synopsis

readpt [-bh] [-d domain] pointname...

Arguments

pointname

The name of the point to retrieve information for. Multiple points can be specified.

-b

Brief output. Print only the point name and value.

-d domain

The domain name of the desired datahub. This replaces the default, which is "default".

-h

Print a help message and exit.

Returns

On success, information on the requested points; on error, a message.

Description

The readpt utility will retrieve the value of a point from any available Cascade DataHub. If a point cannot be found a new point will be created in the datahub it was queried from. The domain can be specified with -d, or by qualifying the pointname, as in domain:thepointname (the latter technique overriding the former).

Dependencies

nserve, datahub

See Also

datahub, writept

Example

    [sh]$  readpt LIC02_sp
      Point: LIC02_sp 
      Value: 55
      Conf: 100
      Lock: 0
      Secur: 0
      
    [sh]$  readpt -d control m23onoff
      Point: m23onoff
      Value: 1
      Conf: 100
      Lock: 0
      Secur: 0
      
    [sh]$  readpt -b control:m23onoff
      Point: m23onoff
      Value: 1

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