Hi, I am writing a simple tool (env command!) for debugging environment/path related issues. Attached below is the xml config file. I noticed that inputs tag is necessary for getting 'execute' button. Is there any way to execute commands that have no input file/data? Also, can we have a similar environment output command available by default at least in the admin panel? It will be useful in debugging cluster/drmaa configuration issues. {{{ $ cat tools/DebugTools/printenv.xml <tool id="env_1" name="ENV" version="1.0.0"> <description>Prints env output</description> <command interpreter="bash"> env </command> <inputs> <param name="filename" type="text" optional="true" value="env.output"/> <!-- param name="envlabel" type="hidden" optional="true" value="env output"/ --> </inputs> <help> Prints env output </help> </tool> }}} -- Thanks, Shantanu.