These environment variables are set up internally to retrieve threshold information from commands that you create. For example, the ./var/opt/pm/SMscripts/pm_mailer script sends detailed mail about the crossed threshold that uses this information. You can create your own shell script that acesses these values using the $ symbol in front of the variable, for example, $PMTHRESH_DESCRIPTION. These variables are helpful in creating your own logging script tht tracks thresholds and rearms of Performance Manager's metrics.

Environment Variable	Description
PMTHRESH_DESCRIPTION	Description of the expression in the database.
PMTHRESH_CURRENT_VALUE	Value that has triggered threshold.
PMTHRESH_THRESHOLD_VALUE	Value that had to be passed to trigger threshold.
PMTHRESH_NODE	Node on which triggered threshold was detected.
PMTHRESH_USER_MESSAGE	User message from Advanced Threshold Dialog box.
PMTHRESH_UPDATE_TIME	The update time value from the triggered expression.
PMTHRESH_REARM_VALUE	The value at which the treshold will be rearmed.
PMTHRESH_TOLERANCE_VALUE	The tolerance of the triggers.
PMTHRESH_STATE	Value is a string being either crossed or rearmed corresponding to the triggered event.
PMTHRESH_ INSTANCE	Additional information about the triggered threshold, such as which file system or cpu crossed.
PMTHRESH_ OPERATOR	Greater than or less than the threshold value.