Each probe uses a different method to acquire data. Which method the probe uses depends on the target system from which it receives data.
The Exec Probe reads events from the internally spawned process specified by the ExecCommand property. It connects to the process by opening three pipes: one pipe to the process, one pipe from the process, and one pipe to standard error (stderr). The probe processes events according to the values specified in the properties file.
The EntrySequence property specifies the chat in string and the ExitSequence property specifies the chat out string.
The probe can be configured to recognize the beginning (header) and the end (footer) of an event. Data can be added to the header and footer of an event using the Header and Footer properties. The probe can also alter the format of the event and how it is processed using the TokenSize, MessageSize, and TerminationCharacter properties.
Data acquisition is further described in the following topics: