shell 判断脚本参数

测试登陆脚本

./test.sh  -p 123 -P 3306 -h 127.0.0.1 -u root

　　

        #!/bin/sh
        if [ $# -ne  ];then
            echo "USAGE: $0 -u user -p passwd -P port -h host"
            exit
        fi

        while getopts :u:p:P:h: name
        do
            case $name in
            u)
                mysql_user=$OPTARG
            ;;
            p)
                mysql_passwd=$OPTARG
            ;;
            P)
                mysql_port=$OPTARG
            ;;
            h)
                mysql_host=$OPTARG
            ;;
            *)
                echo "USAGE: $0 -u user -p passwd -P port -h host"
                exit
            ;;
            esac
        done

        if [ -z $mysql_user ] || [ -z $mysql_passwd ] || [ -z $mysql_port ] || [ -z $mysql_host ]
        then
            echo "USAGE: $0 -u user -p passwd -P port -h host"
            exit
        fi

        echo $mysql_user $mysql_passwd $mysql_port  $mysql_host

# 结果 root 123 3306 127.0.0.1