umask from ant

[Eric Fetzer]

I don't get it, I do the following and it crashes:
 
    <exec executable="umask">
      <arg value="0002"/>
    </exec>
 
Anyone have a clue why that would be?  I'm on redhat 5.5 (Tikanga).  I can type 
umask 0002 on the command line all day long...  Here's the error:
 
/app/rosstr/test.xml:5: Execute failed: java.io.IOException: Cannot run program 
"umask": java.io.IOException: error=2, No such file or directory
 
Thanks,
Eric