save this file in your /bin which is in your path. So that you can use it from your command line as $commit feat

commit.sh

#!/bin/sh
TYPE=$1
if [ "$TYPE" == "feat" ]; then
	MESSAGE="a new feature"
elif [ "$TYPE" == "fix" ]; then
	MESSAGE="a bug fix"
elif [ "$TYPE" == "docs" ]; then
	MESSAGE="changes to documentation"
elif [ "$TYPE" == "style" ]; then
	MESSAGE="formatting, missing semi colons, etc; no code change"
elif [ "$TYPE" == "refactor" ]; then
	MESSAGE="refactoring production code"
elif [ "$TYPE" == "test" ]; then
	MESSAGE="adding tests, refactoring test; no production code change"
elif [ "$TYPE" == "chore" ]; then
	MESSAGE="updating build tasks, package manager configs, etc; no production code change"
else
	MESSAGE="nothing"
fi

if [ "$MESSAGE" == "nothing" ]; then
	echo "Invalid Commit Type. Must be one of (feat, fix, docs, style, refactor, test or chore)"
	exit
else 
	echo "Committing $MESSAGE"
fi

echo "Enter a commit message:"
read commitmessage
git commit -m "$commitmessage"