walkthrough

git stuff

	git branch tutorial
	git checkout tutorial
	git status

checkpatch stuff

	./scripts/checkpatch.pl  (empty for help)
	--terse
	--file

pick a file

	checkpatch comedi file

show errors vs warnings

coding style
	why?
	what is it?
	80 columns
	tabs
	brace placement
	* placement
	Documentation/CodingStyle


edit the file

change the line, run checkpatch.

git diff

git commit

Good changelog comment

signed-off-by:
	what it is

git show
	--pretty=email

git format-patch

git send-email
	--smtp-server /usr/bin/msmtp

	git config --global sendemail.smtpserver /usr/bin/msmtp