xvfb-run is a linux utility that starts a virtual X-server.
This is useful for performing rendering jobs on headless servers and cluster environments, as an easier alternative to X-11 forwarding with SSH.
XvfbRun enhancer wraps commands with this call.
It’s safer than manually prepending
xvfb-run -a to your command, automatically handling quote escaping and preventing typos.
It also checks the
$DISPLAY variable to see if
xvfb-run is necessary, so it’s safe to use on any system.