Deium, Kurt,
Thanks for the prompt and good advice. This is what I have just tried :-
root@Tesla:/lua-5.2.3/src# echo $PATH
/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin
root@Tesla:/lua-5.2.3/src# ./lua hello.lua
Hello World
which is a success! Just out of curiosity, before I amend my path variable, or not, what is best practice in the Linux world as far as the best place to put executables? Is it best to just put them all in /bin, have a symbiotic link in /bin to them or keep them in their own directory and alter the path variable. Sorry about all these beginners questions but the last time I tried to used a CLI driven OS with any seriousness was back in the days of RSX/11M on a PDP11 32 years ago! Probably before either of you were born!
Thanks a lot guys,
Steve