The old macros should *not* have been used in any example; as they
were intended for internal use only.
This was noted in Doxygen ...by not noting them as publicly consumable.
The spawned shell needs its sourced environment and aliases.
Resolves:
sh: line 1: dfi: command not found
Error in <TRint::HandleTermInput()>: std::runtime_error caught:
FILE = "/home/business/docker-finance/plugins/root/example.cc"
LINE = 125
WHAT = "command failed"
