parse shell parameters

sh_param.sh

RED='\033[0;31m'
NC='\033[0m' # No Color

function usage
{
    echo -e "usage: $0 [OPTION...]"
    echo -e ""
    echo -e "Simple description"
    echo -e ""
    echo -e " -s, --set    X.Y    set parameter"
    echo -e " -f, --flag           set flag"
    echo -e " -h, --help          print this help"
}

SET="default"
FLAG=0

while [ "$1" != "" ]; do
    case $1 in
        -s | --set )
            shift
            SET=$1
            ;;
        -f | --flag )
            FLAG=1
            ;;
        -h | --help )
            usage
            exit
            ;;
        * )
            echo -e "\n${RED}Parameter not found:${NC} $1\n"
            usage
            exit 1
    esac
    shift
done