git pre-commit for unity and it check forgot to add the meta file

pre-commit-for-unity.sh

#!/bin/sh
#
# git pre-commit for Unity
# It check Forgot to add the meta file
# An alert is issued when a file has been added but no meta file has been added
#
# To enable this hook, rename this file to "pre-commit".

addfiles=`git diff --cached --name-status | awk '$2 != "A" { print $2 }'`
for file in $addfiles
do
    if [[ ! "$file" =~ .meta$ ]]; then
	metaFileName=$file.meta
	hasMeta=false
	for item in ${addfiles[@]}; do
	    if [ $item == $metaFileName ]; then
		hasMeta=true
	    fi
	done

	if ! $hasMeta ; then
	    cat <<EOF
The following file was added, but the meta file for the file was not added
Check your git workspace!!

${file}

EOF
	    exit 1
	fi
    fi
done