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文章 2022-10-25 来自：开发者社区

shell 脚本编程及位置变量详解|学习笔记

开发者学堂课程【Linux Shell 编程入门与实战：shell 脚本编程及位置变量详解】学习笔记，与课程紧密联系，让用户快速学习知识。课程链接：https://developer.aliyun.com/learning/course/551/detail/7622shell 脚本编程及位置变量详解内容介绍：一、局部变量和全局变量二、环境变量三、只读和位置变量一、局部变量和全局变量(1)....

文章 2022-10-23 来自：开发者社区

shell脚本编程及位置变量详解|学习笔记

开发者学堂课程【Linux Shell 编程入门与实战：shell脚本编程及位置变量详解】学习笔记，与课程紧密联系，让用户快速学习知识。课程链接：https://developer.aliyun.com/learning/course/551/detail/7622?内容介绍：一、局部变量和全局变量二、环境变量三、只读和位置变量一、局部变量和全局变量(1)局部变量变量赋值：name='va....

阿里云文档 2022-10-18

问题描述Dataphin在Shell脚本中引用全局变量时，显示的为什么是本地变量？问题原因Shell任务中使用全局变量时，引用的是全局变量的编码，而不是变量名称。编码解决方案在Shell中使用全局变量的编码即可。适用于Dataphin基于独立部署3.4.1环境验证

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更新时间 2023-01-14 20:06:09

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{"$env":{"JSON":{}},"$page":{"env":"production"},"$context":{"optioninfo":{"dynamic":"true","static":"true"},"simplifiedDisplay":"newEdition","newCard":[{"ifIcon":"icon","icon":"cloudshell","iconImg":"","contentLink":"https://www.aliyun.com/product/cloudshell","title":"云命令行","des":"网页版命令行工具，允许用户通过命令行管理阿里云资源。您可以通过浏览器启动云命令行，在启动时会自动为您分配一台Linux管理机，并预装CLI、Terraform等多种云管理工具和ssh、vim、jq等系统工具，供您免费使用","btn1":"立即使用","link1":"https://shell.aliyun.com/?spm=5176.cncloudshell.0.0.16fc35ddxyC1F7","btn2":"帮助文档","link2":"https://help.aliyun.com/product/89853.html","btn3":"视频解读","link3":"https://yq.aliyun.com/live/564","infoGroup":[{"infoName":"产品功能","infoContent":{"firstContentName":"阿里云CLI","firstContentLink":"https://help.aliyun.com/product/29991.html","lastContentName":"预装工具","lastContentLink":"https://www.aliyun.com/product/cloudshell"}},{"infoName":"产品功能","infoContent":{"firstContentName":"自动分配虚拟机","firstContentLink":"https://www.aliyun.com/product/cloudshell","lastContentName":"支持浏览器访问","lastContentLink":"https://www.aliyun.com/product/cloudshell"}}]}],"card":[{"link":"#","icon":"https://img.alicdn.com/tfs/TB1afahQpXXXXaAapXXXXXXXXXX-114-114.png","title":"云服务器ECS","des":"云服务器（Elastic Compute Service，简称 ECS）是一种简单高效、处理能力可弹性伸缩的计算服务，帮助您快速构建更稳定、安全的应用，提升运维效率，降低 IT 成本，使您更专注于核心业务。","btn1":"FPGA云服务器","link1":"#","btn2":"GPU云服务器","link2":"#","tip":"新一代云服务器N5 （Xeon® (Skylake)处理器）上线！<a href=\"#\" target=\"_blank\">立即申请</a>"}],"search":[{"txt":"云数据库","link":"#"}],"infoCard":[{"bannerTitle":"容器服务 ACK","bannerUrl":"https://sucai-material-online.oss-cn-hangzhou.aliyuncs.com/image/hytxyyzq.jpg?Expires=1601273745&OSSAccessKeyId=ZWQG8meWkF3hYIf0&Signature=4DqSTctVr1IizPxE5pyjvd94cGc%3D&x-oss-process=image%2Fresize%2Cw_1072%2Fquality%2CQ_80","bannerContent":"容器服务 Kubernetes 版（简称 ACK）提供高性能可伸缩的容器应用管理能力，支持企业级容器化应用的  全生命周期管理。整合阿里云虚拟化、存储、网络和安全能力，打造云端最佳容器化应用运行环境。","liveButtonName":"立即购买","liveButtonLink":"https://www.aliyun.com/product/kubernetes","homePageName":"管理控制台","homePageLink":"https://cs.console.aliyun.com/index2#/k8s/cluster/list","contentTitle":"相关推荐","linkGroup":[{"linkContent":"企业版低至85折","linkTo":"立即抢购","link":"https://common-buy.aliyun.com/?spm=5176.181001.1396228.1.334760dfEMZUnP&commodityCode=acr_ee_public_cn&regionId=cn-beijing#/buy"},{"link":"https://help.aliyun.com/learn/learningpath/cs.html","linkContent":"学习更多容器服务内容","linkTo":"马上进入"},{"link":"https://cloud.video.taobao.com/play/u/2554819776/p/1/e/6/t/1/50197975.mp4","linkContent":"查看关于容器服务视频","linkTo":"立即观看"}]}],"title":{"mainTitle":"镜像仓库","subtitle":"容器服务 Kubernetes 版（简称 ACK）提供高性能可伸缩的容器应用管理能力，支持企业级容器化应用的  全生命周期管理。整合阿里云虚拟化、存储、网络和安全能力，打造云端最佳容器化应用运行环境。  业内领先：Gartner竞争格局国内唯一入选，Forrester报告国内排名第一。","linkUrl":"https://www.aliyun.com/product/kubernetes","btnText":"查看详情"},"visual":{"topbg":"https://img.alicdn.com/tfs/TB1Z6eJXrY1gK0jSZTEXXXDQVXa-108-108.png","icon":"aliyun-icon-play","textColor":"light"},"dataList":[{"summary":"MaxCompute跨项目迁移","author":"为您介绍如何配置相同区域下不同的MaxCompute项目，以及如何实现数据迁移","linksUrl":"https://help.aliyun.com/document_detail/123194.html"},{"summary":"MaxCompute数据迁移至OTS","author":"为您介绍如何将MaxCompute数据迁移至表格存储OTS（Table Store）","linksUrl":"https://help.aliyun.com/document_detail/127236.html"},{"summary":"MaxCompute数据迁移至OSS","author":"为您介绍如何使用DataWorks的数据同步功能将MaxCompute数据迁移至对象存储OSS（Object Storage Service）","linksUrl":"https://help.aliyun.com/document_detail/128595.html"}],"sceneCard":[{"title":"云计算试飞员老蒋开课啦！第一期：电商网站搭建","des":"这是一段副标介绍，这是一段副标介绍。这是一段副标介绍，这是一段副标介绍。这是一段副标介绍，这是一段副标介绍。这是一段副标介绍，这是一段副标介绍。","btn":"立即观看","link":"#","image":"https://"}],"txt":[{"title":"适用场景","scenariosone":[{"txtone":"小型电商：支持访问50万PV,一段场景方案的介绍。","txttwo":"产品推荐","product":[{"name":"ECS 2核4G 40G数据盘 5M带宽","link":"#"}]}]}]}}

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