The Urchin Log Processing Engine, urchin, is the core log processing component of Urchin. Ordinarily, the log processing engine is invoked from the Urchin Scheduler (urchind) when a task is run. However, it is possible to execute urchin directly from a command shell to run a specific profile. This is useful in highly scripted environments where running a Urchin tasks from an external source such as the Windows Task Scheduler or cron on UNIX-type systems. It is also useful for running a profile under special circumstances, such as to process only hits for a particular day, or to do some type of debugging.
urchin is not truly a utility - it is documented here because it possesses some limited command-line capabilities that may prove useful in certain environments.
urchin is located in the bin directory of the Urchin distribution.
Usage of the utility is as follows:
urchin [-h] (prints usage message and exits) urchin [-v] (prints version and exits) urchin [-DHt [-d YYYYMMDD] -p profilewhere:
-D runs urchin in debug mode -H causes the runtime output of urchin to be logged to the standard history directory for the profile -t runs urchin in test mode only to output runtime parameters -d specifies that Urchin should only process hits from logs that match the specified date (YYYYMMDD format) -p specifies the profile to run
- On UNIX-type systems, urchin should be run as the user/UID that Urchin is installed as to ensure that the databases for the profile are owned by that UID, since urchin will create them if they do not already exist.