shell实现自动安装

#!/bin/bash

function MyInstall
{
    if ! rpm -qa |grep -q "^$1"
    then
        yum install $1
        if [ $? -eq 0 ]
        then
            echo -e "$i install is ok\\n"
        else
            echo -e "$1 install no\\n"
        fi
    else
        echo -e "yi an zhuang ! \\n"
    fi
}

for ins in mysql php httpd
do
    MyInstall $ins
done