如何用shell脚本读取配置文件

setup.ini内容示例：

Install mysql + nginx + php + java=install_mysql install_php install_nginx install_java

目标：按行读取并遍历

# 读取配置文件
i=1
while read LINE; do
    SETUP_INI[$i]=$LINE
    ((i++))
done < setup.ini
for (( i = 1; i <= ${#SETUP_INI[@]}; i++ )); do
    echo ${SETUP_INI[$i]}
done