Using Event Filters

An event filter is used to identify the set of events in which you are interested. After it is established, a filter evaluator is given a string defining the events of interest, and can then be passed a series of events, returning for each a Boolean indication of whether the event passes the filter.

Filters are used in EVM subscribing client programs to specify the set of events for which they want to subscribe, and may also be used in determining the action to be taken for the events they receive. To limit the set of events returned, filters can also be used by several command-line utilities as start options. For information on the use of filters by command-line utilities, see the HP-UX System Administration document, and for more information about filter syntax, see EvmFilter(5).

For example on how to use filters, see “Using Filter Evaluators”.