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# Monitoring Site Activity
_Services for tracking content editing and general site usage_
## Overview
TWiki provides two highly configurable, automated site monitoring tools, **WebNotify**, to email alerts when topics are edited, and **WebStats**, to generate detailed activity reports.
## WebNotify Recent Changes Alert
Each TWiki web has an automatic email alert service that sends a list of recent changes on a preset schedule, like once a day. Users can subscribe and unsubscribe using %NOTIFYTOPIC% in each web.
### Setting Up WebNotify
The Perl script `mailnotify` is called by a deamon in regular intervals. The script sends an automated email to subscribed users if topics were changed in a web within last interval.
#### Configuring Outgoing Mail
%WIKITOOLNAME% will use the `Net::SMTP` module in case it is installed on your system. You need to specify the `SMTPMAILHOST` variable in [[TWikiPreferences]].
You can use an external mail program like `sendmail` in case the `Net::SMTP` module is not installed. In this case specify the `$mailProgram` in `twiki/bin/TWiki.cfg`.
#### Setting the Automatic Email Schedule
**For Unix platforms:** Edit the `cron` table so that `mailnotify` is called in an interval of your choice. Please consult `man crontab` of how to modify the table that schedules program execution at certain intervals. Example:
% crontab -e
15,45 * * * * (cd ~twiki/public_html/bin; ./mailnotify -q)
The above line will call mailnotify at 15 minutes and 45 minutes past every hour. The `-q` switch suppresses all normal output.
**For ISP installations:** Many ISPs don't allow hosted accounts direct cron access, as it's often used for things that can heavily load the server. Workaround scripts are available.
**On Windows NT/2000:** You can use a scheduled task. **_Note:_** AT on an NT machine is pretty limited. Microsoft has a [replacement](http://www.microsoft.com/ntserver/partners/findoffering/serversolutions/Maintnce.asp#cron).
## Site Usage Statistics
### Configuring for Automatic Operation
* You can automatically generate usage statistics for all webs. To enable this:
* Make sure variable `$doLogTopicView, $doLogTopicSave and $doLogTopicUpload` in `TWiki.cfg` are set. This will generate log entries in file `twiki/data/log.txt` .
* Topic [[WebStatistics]] must be present in all webs where you want to have statistics. You can use the topic in the Main web as a template.
* Call the `twiki/bin/statistics` script from a cron job, once a day is recommended. This will update the [[WebStatistics]] topics in all webs.
* **_Attention:_** The script must run as the same user as the CGI scripts are running, which is user `nobody` on most systems. Example crontab entry:
`0 0 * * * (cd /path/to/TWiki/bin; ./statistics >/dev/null 2>&1)`
* There is a workaround in case you can't run the script as user `nobody` : Run the utility `twiki/bin/geturl` in your cron job and specify the URL of the `twiki/bin/statistics` script as a parameter. Example:
`0 0 * * * (cd /path/to/TWiki/bin; ./geturl mydomain.com /urlpath/to/TWiki/bin/statistics >/dev/null 2>&1)`
### Generating Statistics Manually by URL
* The `twiki/bin/statistics` script can also be executed as a CGI script, just enter the URL in your browser. Examples:
* Update current month for all webs:
`http://mydomain.com/twiki/bin/statistics`
* Update current month for Main web only:
`http://mydomain.com/twiki/bin/statistics/Main`
* Update January 2000 for Main web:
`http://mydomain.com/twiki/bin/statistics/Main?logdate=200001`
-- [[PeterThoeny]] - 16 Mar 2001
-- [[MikeMannix]] - 01 Sep 2001