It is possible to open a JFR recording from command line using the open command, for example

jmc -open /Demo/recording.jfr

but a fully qualified path is needed. It would be convenient if you could just specify the filename, like this:

jmc -open recording.jfr

This is especially annoying if the path is long. I believe this used to work in earlier releases of JMC. Reproducible on Mac OS X.