===== Script =====
For singleplayer
<code c++ init.sqf>
private _cfg = configFile >> "CfgWorlds" >> "GenericNames" >> "AfroNames" >> "FirstNames"
_unit setName getText (_cfg select floor random count _cfg);
</code>

For multiplayer
<code c++ init.sqf>
private _cfg = configFile >> "CfgWorlds" >> "GenericNames" >> "AfroNames" >> "FirstNames"
[_unit, getText (_cfg select floor random count _cfg)] remoteExec ["setName",0,_unit];
</code>