It is possible to override or add additional testvar settings directly from the command-line. This can be done using the -testvar option. The format for the -testvar option is testvarName=value.
Here's a simple example using a single testvar:
# buddy -testvar eapType=eap-sim -module eapol.tcl -trace
If the testvar is part of a testvar_group, the -testvar_group option should be used instead. The format for the -testvar_group option is group:testvarName=value:
# buddy -testvar_group lan2:lanSSID=testnet
If the value contains any whitespace then it must be enclosed in quotes:
# buddy -testvar firewallTcpOpenPorts="22 443"