How can I easily find all files necessary to run grub-install?

I need to merge grub-install(GRUB2) into a very stripped down and specialized copy of Linux we use at work.
grub-install is a script which calls a number of other things. Is there any way to monitor the run-process and log every file that gets touched?
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

It's a shell script.
run in verbose mode
# sh -x grub-install <option>  | grep "^+" > /tmp/gi.log
And go through /tmp/gi.log to see what command/log files it uses.

jasonzxAuthor Commented:
That almost works but It outputs to the screen and the log file is empty :/
Woo, sh -x goes to STDERR
sh -x grub-install <option>  2>  /tmp/gi.log

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.