If you are updating ANSYS License Server Information for ANSYS Client using only the command line, do the following

# vim usr/local/ansys_inc/shared_files/licensing/ansyslmd.ini

SERVER=1055@IP_Address_Of_ANSYS_LIC_SVR
ANSYSLI_SERVERS=2325@IP_Address_Of_ANSYS_LIC_SVR

Make sure the 1055, 1056, 2325 Ports of the License Server are opened.