Reset WebGUI password

[bigops]

Hi
I know this should have been answered in the forums, but couldn't find anything with steps outlining the procedure for the new versions of OPNsense.  I need to reset the WebGUI password of a bunch of OPNsense boxes due to them getting locked out.   I am unable to use the live CD mode as the system does not have any active USB ports (that is a problem to be fixed later).  I am able to boot into the single user mode.  From there what is the process to change the password? 

[fabian]

if all file systems are mounted you can reset it from the terminal - don't know the file name but ist must be somewhere under /usr/local