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From "Duncan Strang" <>
Subject Environment variables with $$
Date Fri, 26 Sep 2003 16:31:00 GMT

I have an ant build script that contains the following target

   <target name="init">
      <filter filtersfile="${filtersfile}" />
         <format property="build.sdate" pattern="yyMMdd" />
      <copy todir="${tmpdir}" filtering="true" >
          <fileset dir="${build}/packages" />
      <property name="providers"
      <echo>Just set a property called providers this has the value

I'm trying to understand the semantics of the $$DESKTOP bit.
I have similar statements all through my 5000 line build.xml
I have been told that DESKTOP is a 'simple environment variable' however
I have set a variable in my .profile file (Solaris 8) with the value
foobar. I can access this from the shell with echo $DESKTOP, I get
foobar back
When I run the init target I was expecting to get
Instead I got

I have the book 'Java development with ant' by Hatcher and Loughran,
they talk about using the env prefix to access environment variables. I
have searched build.xml and I can find no reference to anything that
looks like it is setting or retrieving an ev.

I have also had a look round the archives, once again all I see is the
env prefix stuff.

Can anyone explain the semantics of $$DESKTOP.

Many Thanks

Duncan Strang
JAVA Consultant
UK eUniversities Worldwide Limited
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