I had already done that as I saw it on another thread:
root@openlitespeed-wordpress-ubuntu-s-1vcpu-2gb-lon1-01:~# /usr/local/lsws/bin/openlitespeed -v
LiteSpeed/1.5.8 Open
module versions:
modpagespeed 2.2-1.11.33.4
cache 1.61
modinspector 1.1
uploadprogress...