Unix-like OS (AIX, HP-UX, Linux, Solaris, etc.) Open a Unix terminal. *cd* into the root of your Virtuoso installation. Use one of the following commands to set Virtuoso-related environment variables. (Note that they do, and must, begin with dot-space-dot-slash.) . ./virtuoso-enterprise.sh — bash, bsh, ksh, and related shells . ./virtuoso-enterprise.csh — csh, tcsh, and related shells Execute the command, oplmgr +stop Retrieve your new Virtuoso license file from an email or ODS briefcase. Use binary-mode ftp to transfer the new license to the Unix box, if required. Place the new license in the bin sub-directory of the Virtuoso installation. Set and export an UNKNOWN tag: http://www.w3.org/1999/xhtml:nowikiOPL_LICENSE_DIR environment variable that passes the path to the directory that contains your Virtuoso license file, e.g. — export OPL_LICENSE_DIR="/opt/virtuoso/bin/" OPL_LICENSE_DIR="/opt/virtuoso/bin/" ; export OPL_LICENSE_DIR Execute the command, oplmgr +start