BaseFileIOUtil(){
	append(){
		local toFile=$1
		shift
		local string=$@

		echo -e "\n$string" >> $toFile
	}

	replace(){
		local toFile=$1
		local oldStr=$2
		local newStr=$3

		sed -i "s/$oldStr/$newStr/g" $toFile
	}

	$@
}
Create methods for file IO
Create methods for file IO
