#!/usr/bin/env php
<br />
<b>Warning</b>:  Undefined variable $argc in <b>/var/www/apache/dev/cal/web/vendor/sabre/event/examples/tail.php</b> on line <b>13</b><br />
<br />
<b>Warning</b>:  Undefined variable $argv in <b>/var/www/apache/dev/cal/web/vendor/sabre/event/examples/tail.php</b> on line <b>14</b><br />
<br />
<b>Warning</b>:  Trying to access array offset on null in <b>/var/www/apache/dev/cal/web/vendor/sabre/event/examples/tail.php</b> on line <b>14</b><br />
Usage:  filename