# Appendix B. Core tasks This appendix contains a reference of all core tasks, i.e. all tasks that are needed to build a basic project. This reference lists the tasks alphabetically by the name of the classes that implement the tasks. So if you are searching for the reference to the `<copy>` tag, for example, you will want to look at the reference of `CopyTask`. B.1 AdhocTaskdefTask The AdhocTaskdefTask allows you to define a task within your build file. Note that you should use <!\[CDATA\[ ... \]\]> so that you don't have to quote entities within your` <adhoc-task></adhoc-task>` tags. Table B.1:聽Attributes NameTypeDescriptionDefaultRequired`name``String`Name of XML tag that will represent this task.n/aYes B.1.1 Examples ``` <target name="main" description="==>test AdhocTask "> <adhoc-task name="foo"><![CDATA[ class FooTest extends Task { private $bar; function setBar($bar) { $this->bar = $bar; } function main() { $this->log("In FooTest: " . $this->bar); } } ]]></adhoc-task> <foo bar="B.L.I.N.G"/> </target> ```