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This is documentation for Caché & Ensemble. See the InterSystems IRIS version of this content.

For information on migrating to InterSystems IRIS, see Why Migrate to InterSystems IRIS?

$DEVICE (ObjectScript)

Contains user-specified device status information.




$DEVICE can be used to record device status information. You can use the SET command to place a value in $DEVICE. By convention, this value should describe the outcome of an I/O operation as a 3-piece string, in the form:


By default, $DEVICE contains the null string.

See Also