Hi,

I would like to know if there's a way to clear the cache from HARS on Linux other than killing the process.

Cheers

Sorry for the late reply. It depends on which cache you're talking about. You could expose a button to execute the typical hscript commands (like geocache) for clearing caches. There shouldn't be cache specific to HARS though.

Another one could be the undo queue in Maya, which keeps the asset node around even after the node is deleted in the Maya scene. This can be cleared by flushing undo with the MEL command:
flushUndo