shell getopt

echo $*
while getopts ":a:bc" opt
do
        case $opt in
                a ) echo $OPTARG
                    echo $OPTIND;;
                b ) echo "b $OPTIND";;
                c ) echo "c $OPTIND";;
                ? ) echo "error"
                    exit 1;;
        esac
done
echo $OPTIND
shift $(($OPTIND - 1))
#通过shift $(($OPTIND - 1))的处理，$*中就只保留了除去选项内容的参数，可以在其后进行正常的shell编程处理了。
echo $0
echo $*

执行命令：./getopts.sh -a 11 -b -c
-a 11 -b -c
11
3
b 4
c 5
5
./getopts.sh