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The application interfaces with these back-end scripts need to be installed on the Workers. Similarly, there are a few jobtypes that also have front-end scripts to provide in-application submission that should be installed on the Client machines.
See http://www.pipelinefx.com/products/supported-applications and technical-specifications/ for a list of supported job types. Search http://wwwdocs.pipelinefx.com/docs for details on the specific application interfaces that you are using.
Note: You can centrally install these jobtypes on the network fileserver. See the configuration parameter worker_template_path for the search path used by the Workers for their jobtypes. Also see Centralized JobTypes
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