Using ant to edit/append data to a text file

Question

I am trying to add a property to a .jad file in my ant build process.

Is there a task in ant to do this? All I need to do is add a line of text to the end of a text

Answer 1

I believe this will work. Testing it now.

<concat append="true" destfile="app.jad">foo: bar</concat>

Answer 2

Another alternative, using the ant echo task

<echo file="app.jad" append="true">hello world
</echo>