− cups notification interface
recipient [ user-data ]
notifier interface provides a standard method for adding
support for new event notification methods to CUPS. Each
notifier delivers one or more IPP events from the standard
input to the specified recipient.
MUST read IPP messages from the standard input using
the ippNew() and ippReadFile() functions and
exit on error. Notifiers are encouraged to exit after a
suitable period of inactivity, however they may exit after
reading the first message or stay running until an error is
seen. Notifiers inherit the environment and can use the
logging mechanism documented in filter(7).
filter(7), CUPS Online Help
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