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概述本文主要介绍通过脚本文件更新Linux实例中的软件源的方法。详细信息阿里云提醒您：如果您对实例或数据有修改、变更等风险操作，务必注意实例的容灾、容错能力，确保数据安全。如果您对实例（包括但不限于ECS、RDS）等进行配置与数据修改，建议提前创建快照或开启RDS日志备份等功能。如果您在阿里云平台授...

linux shell脚本编程笔记（三）：三种引号的区别

双引号、单引号、反引号的区别测试用例： OPDATE=`date -d '-1 day' +%Y%m%d` for i in $(seq 10) do FILEDATE=`date -d "-$i day" +%Y%m%d` echo ${FILEDATE} done 单引号：单引号里的所有字符...

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