Nested Runs in CMAQ

So the default CMAQ CCTM scripts have a section that says:

#> remove existing output files?
set DISP = delete
#set DISP = update
# set DISP = keep

If you choose "delete" there, it clears out your $OUTDIR before running. This can be cool if you are fixing something that you did wrong the first time (which applies to 99% of the time for me), but can cause problems if you want to do a run that is more than 1 day (which should be 100% of the time). What will happen if you try to run with an initial condition of the output from last run is that the output will be deleted before it's accessed as an initial condition. This is really annoying and embarrassing. It also means that...

you pretty much don't want to use the default CMAQ CCTM scripts basically ever.

Instead you want to use a custom-made one that has some if-statements and for-loops. This allows you to have a spin-up period, redirect the output from the day before as the initial condition for the previous day, and so on.

If you're like me, you're like "that sounds easy enough but really tedious." In which case your first plan of attack is to:

don't waste your time and just copy off someone else's

I put a copy on mercury in /Users/Luedke/cmaq/cctm/copy.this.cctm.runscript
I did my best to comment in what you need to change and stuff so it finally makes sense.
Have fun.