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In addition to <arg> elements, the <executefile> element also accepts <env> elements to set variables in the environment of the target process. This can be useful if this process requires some environment variables, such as its installation directory, to work properly. An <env> element has the following syntax: <env>variable=value</env>. Note the value supports variable substitution, for example: <env>MY_PRODUCT_HOME=$INSTALL_PATH</env>.  The The workingDir attribute for the <executefile> element adds the ability to set the working directory of the process spawned by the ProcessBuilder object, much as <env> elements refer to the environment object of ProcessBuilder.