I'm not really on a "*nix" system per se. I'm running on Leopard. I'm using the native MySQL Community Server as opposed to MAMP. Where can I find this file?
Based on a few web pages out there where people installed MySQL on Leopard I've seen this path frequently:
/opt/local/etc/mysql5/
my.
cnf
Beyond that you
can use the locate command in terminal mode on your Mac and I already gave you a link which outlines where that file gets installed based on platform and info on how to create the file.
Because you didn't install MAMP, much of the tweaking of MySQL for advanced setup like this is done via shell (Mac Terminal). FYI.
Please note, for the record, your original request is not novice level - changing the default table format is a rather advanced thing to do, and extremely dangerous in the hands of someone who is inexperienced in such matters. Trying to be as polite as possible and not disrespectful, I found it surprising you didn't know what my.cnf was and also that you never thought to use the locate command in Mac terminal mode. My original response and overall tone assumed you were not novice based on the advanced nature of your request. I want to emphasize it is time to sit down and actually read the MySQL manual - something I don't recommend often since that software virtually installs itself with common, sensible defaults, across nearly all platforms. But when you start getting into the advanced features, it requires a lot more reading of boring docs and maybe some additional online research (Google) to ensure what you want to do is done without destroying a database or performance issues affecting queries. Many folks here run MAMP, so this forum focuses mostly on that setup as you may have noticed.
I say all this *after* I posted links and help in numerous prior replies - I am
not just brushing you off telling you to "RTFM" as many others might do, you have been helped.
Nothing personal intended by any of this, honest. Thanks and take care. You got it from here!
-jim