How can I start/run .jnlp on linux?

Solution 1:

In order to run a Java Network Launching Protocol (JNLP) you need to have the Java Web Start (JavaWS) software installed on your system. To verify, open the terminal and type:

javaws

At least for Debian-based Linux distribuitions, JavaWS is included within the icedtea-netx package. To install it using apt (package manager):

sudo apt install icedtea-netx

Some java dependencies might be needed. If so, apt will prompt you to.

Having every thing installed properly, just run:

javaws file.jnlp