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= Cron Task Scheduler Integration =
The `conf/cron/cron.daily/imip-agent` file contains commands that update
the following:
* Free/busy collections for all known users
* Free/busy collections for all known quotas
* Quota records for all known quota groups
This file should be copied to the appropriate destination. For example:
{{{
cp conf/cron/cron.daily/imip-agent /etc/cron.daily/
}}}
Where frequency-specific directories are not supported by cron on a system, a
`crontab` entry of the appropriate format is required instead.
== Event Recurrences ==
The periods defined by recurring events are not all recorded in a user's
free/busy collection if such events recur indefinitely. Instead, only the
periods within a certain window of time are recorded for such events. As a
consequence, free/busy collections need to be progressively expanded over
time to include periods that were ignored when previously recording
free/busy information for an event.
See the [[../EventRecurrences|guide to event recurrences]] for more information
on how recurring events are supported.
Responsibility for generating free/busy expansions lies with the
`tools/make_freebusy.py` program, which is a general tool that can also
reset the free/busy records defined for a user or those made available to a
user, as well as the free/busy records defined for a resource quota.
== Quota Journals ==
As events are confirmed for resources, where quotas on resources have been
imposed, such quotas will be consumed until eventually exhausted, thus
preventing future reservations. By expiring records of past events, quotas
can effectively be replenished, allowing reservations to be made for future
events.
See the [[../Resources|resources guide]] for more information in imposing
quotas on groups of resources.
Responsibility for updating the quota records lies with the
`tools/update_quotas.py` program, which can be used manually to update quota
information for the indicated quota groups.
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