<project name="blabla" default="doit">
   <target name="blabla">
        <exec executable="sh">
            <arg value="blabla.sh" />
        </exec>
   </target>
   <target name="doit">
   <antcall target="blabla"/>
   <antcall target="blabla"/>
   <antcall target="blabla"/>
   <antcall target="blabla"/>
   <antcall target="blabla"/>
   <antcall target="blabla"/>
   <antcall target="blabla"/>
   <antcall target="blabla"/>
   <antcall target="blabla"/>
   <antcall target="blabla"/>
   </target>
</project>
