tl;dr version: I'd like to be able to do something like $PATH/app/pharo-vm/pharo --nodisplay app.image st setup-worker.st --port 8091 and: $PATH/app/pharo-vm/pharo --nodisplay app.image st setup-worker.st --port 8092 etc. Do I have to define a subclass of STCommandLineHandler? How can I capture the --port argument? For what I saw, only "boolean" parameters can be defined (--quit, --save, etc, without arguments). It is, no getopts compatibility. Long version: For my apps I have a pool of worker images with Zinc+Seaside behind an nginx proxy. Each "upstream" (aka "worker") server, is started by supervisord, using a separate startup smalltalk script, where the only thing I change is the port of ZnZincServerAdaptor to start on a different port. The rest is identical. The startup is something like: $PATH/app/pharo-vm/pharo --nodisplay app.image st setup-worker1.st and for worker2: $PATH/app/pharo-vm/pharo --nodisplay app.image st setup-worker2.st and for worker3: $PATH/app/pharo-vm/pharo --nodisplay app.image st setup-worker3.st etc. Is there a better way to perform this without having to copy setup-worker1.st to setup-workerN.st for each worker image? How do you manage this? Regards, Esteban A. Maringolo