notifier - cups notification interface
notifier recipient [ user-data ]
The CUPS 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.
Notifiers 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).
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