Licensing Autodesk Linux System Products

Simply copy past the license string which was emailed to you in to
'/usr/local/flexlm/licenses/DL_license.dat'.

To do that become super-user (root) in a shell and change into the
directory:

cd /usr/local/flexlm/licenses

and edit the file DL_license.dat

kedit or nedit depending on what version of Redhat you are using

Example : kedit DL_license.dat

Scroll to the bottom of the file and copy/paste the string in as is.

Save and close the file.