You can run jfd.exe -V from the <version>\etc path in the relevant program files directory.
c:\Users\sas>"C:\Program Files\IBM\IBM Spectrum LSF Process Manager\10.1\etc\jfd.exe" -V
IBM Spectrum LSF Process Manager 10.1.0.0 Build 439270 (for SAS), Aug 1 2017
Copyright International Business Machines Corp. 1992, 2016.
US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
c:\Users\sas>
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Greg Wootton | Principal Systems Technical Support Engineer