HP-UX Reference (11i v3 07/02) - 1M System Administration Commands A-M (vol 3)

evmlogger(1M) evmlogger(1M)

If a forward command is speciﬁed, the logger executes the command when any incoming event matches

the forwarding ﬁlter. The logger then pipes the incoming event into the command’s

stdin stream.

The logger executes forwarding commands asynchronously and continues to handle events while commands

are running. However, to ensure proper sequencing, the logger allows only one instance of each command

to run at a time. If a command is running and another event arrives that matches the forwarder’s ﬁlter,

the event is queued until the command terminates. At which time the logger reruns it with the next

queued event. The size of each forwarder’s queue is limited and is controlled using the

maxqueue key-

word. To minimize the chances of queuing or missing events, avoid using the forwarding facility to run

commands that may take signiﬁcant time to execute. See evmlogger.conf(4) for more information on set-

ting the queue limit.

By default, only events posted through the local EVM daemon are handled by the logger’s event logs and

forwarders.

If an incoming event matches the suppression ﬁlter associated with an event log or forwarder, the event is

considered for suppression. For an event log, suppressing an event reduces the risk of wasting ﬁle storage

space by logging repeated instances of the same event. For a forwarder, suppressing an event reduces the

risk of sending replicated mail messages reporting the same event over a short period. For a full discussion

of the conﬁguration values which control suppression see evmlogger.conf(4).

RETURN VALUES

The following exit values are returned:

0 Successful completion.

not 0 An error occurred.

FILES

/etc/evmlogger.conf

Default logger conﬁguration ﬁle

/var/evm/adm/logfiles/evmlogger.log

Error log

/var/run/evmlogger.info

Run information ﬁle