代码：

帮助手册雏形

function help(){
        echo -e "Help manual":
        echo -e "  -h. -- help      View the help manual"
        echo -e "  install          Installation"
        echo -e "  uninstall        Uninstall"
}

case "$1" in
        --help)
        help
        ;;
        -h)
        help
esac
exit 0

返回：