Noob question: generate a bash script for Mac from all killer, no filler .bat ?

[The Piper]

Hello all,

Getting back to emu after a long long time..

My noob question (one of many) is this,
how do I make a proper Bash script for my Mac from the “all killer, no filler” game list directory .bat files?

Can’t really use search on this website, but tried it through the googler with “in site”.  No dice.  Tried the FAQ (http://forum.arcadecontrols.com/index.php/topic,19049.msg151575.html#msg151575
No dice.
Tried messaging jason531 who seems to know what I’d like to do, but I guess I don’t have access to messaging until I make a few posts. 
So here I am..

I’ve got my iMac (will hopefully get a pc eventually), Mame matching my merged rom set (external had), a large usb stick with mame on it , where I want to put the curated roms to, and a HUGE lack of knowledge.  Can ya help me?

Oh, and otherwise, I’ve got an old xarcade that I put the zero lag in, a spinner I made from an optical mouse, and a Star Wars 1UpArcade (that I’d like to upgrade to a multi-emu station).  That is the all the major info on my gear and lack of skills.  I am very appreciative and thankful for all of it, except want to work on the “I don’t know” portion.