Linux dev zero 的相关内容

探秘Linux特殊设备文件：（/dev/null,/dev/zero,/dev/random,/dev/urandom等）

第一章：设备文件简介（Introduction to Device Files） 1.1 设备文件概述（Overview of Device Files）在Linux和类Unix操作系统中，一切皆文件。设备文件是操作系统用来访问硬件设备的一种特殊文件。它们位于/dev目录下，允许用户和程序以文件的...

Linux中/dev/null和/dev/zero的作用

1./dev/null和/dev/zero介绍在Linux环境中，我们会经常用到/dev/null和/dev/zero，今天为大家讲讲/dev/null和/dev/zero的作用以及使用场景。 1.1./dev/null介绍linux中/dev/null，它是一种特殊的虚拟设备，用于写入而不是读取，...

Linux Shell 编程

4 课时 |

2099 人已学 |

加入学习

Linux 运维自动化课程

4 课时 |

1478 人已学 |

加入学习

LINUX 企业常用服务

7 课时 |

3036 人已学 |

加入学习

Linux系统中有关/dev/null和/dev/zero文件说明及实践

Linux系统中有关/dev/null和/dev/zero文件说明请解释Linux中/dev/null和/dev/zero两个文件的作用和区别。在类Unix操作系统中，设备节点并不一定要对应物理设备。没有这种对应关系的设备被称之为伪设备。操作系统运用了它们实现多种多样的功...

【linux】/dev/null与/dev/zero详解【转】

转自：http://www.cnblogs.com/xianghang123/archive/2012/03/23/2413381.html 使用/dev/null 把/dev/null 看作"黑洞" . 它非常等价于一个只写文件. 所有写入它的内容都会永远丢失. 而...

共有4条

< 1 >

跳转至： GO

更新时间 2024-03-21 09:58:11

本页面内关键词为智能算法引擎基于机器学习所生成，如有任何问题，可在页面下方点击"联系我们"与我们沟通。

产品推荐

{"optioninfo":{"dynamic":"ture","static":"true"},"simplifiedDisplay":"newEdition","newCard":[{"ifIcon":"img","link":"https://img.alicdn.com/tfs/TB1XY8hGYr1gK0jSZFDXXb9yVXa-1740-328.png","icon":"","iconImg":"https://img.alicdn.com/tfs/TB1zI1mn8FR4u4jSZFPXXanzFXa-232-232.png","contentLink":"https://www.aliyun.com/product/alinux","title":"Alibaba Cloud Linux 2","des":"Alibaba Cloud Linux 2(原Aliyun Linux 2) 是阿里云推出的下一代 Linux 发行版，它为云上应用程序环境提供 Linux 社区的最新增强功能，在提供云上最佳用户体验的同时，也针对阿里云基础设施做了深度的优化。","link1":"https://ecs.console.aliyun.com/#/home","btn1":"产品控制台","link2":"https://ecs-buy.aliyun.com/buyRedirect?spm=5176.cnalinux.0.0.549a6fc5YgcSNe&regionId=cn-beijing&imageId=aliyun-2.1903-x64-20G-alibase-20190327.vhd","btn2":"立即使用","btn3":"产品文档","link3":"https://help.aliyun.com/document_detail/111881.html?spm=5176.cnalinux.0.0.549a6fc5YgcSNe","infoGroup":[{"infoName":"产品入门","infoContent":{"firstContentName":"用户指导","firstContentLink":"https://help.aliyun.com/document_detail/111881.html","lastContentLink":"https://help.aliyun.com/document_detail/156214.html","lastContentName":"常见问题"}},{"infoName":"最新动态","infoContent":{"firstContentLink":"https://help.aliyun.com/document_detail/154951.html","firstContentName":"产品动态","lastContentLink":"","lastContentName":""}},{"infoName":"相关产品","infoContent":{"firstContentLink":"https://www.aliyun.com/product/ecs","firstContentName":"云服务器 ECS","lastContentName":"","lastContentLink":""}}]}],"card":[],"search":[],"infoCard":[{"bannerUrl":"https://img.alicdn.com/tfs/TB1Xf81a3gP7K4jSZFqXXamhVXa-5169-974.jpg","bannerTitle":"mPaaS 小程序","bannerContent":"源自于支付宝小程序框架，亿级线上业务体量的锤炼，安全性媲美支付宝原生能力。<br>不仅面向自有 App 投放小程序，更可快速构建打包，覆盖支付宝、淘宝、钉钉等应用。","liveButtonName":"查看详情","liveButtonLink":"https://www.aliyun.com/product/mobilepaas/mpaas-miniprogram","contentTitle":"提供即开即用的端上体验","homePageLink":"https://common-buy.aliyun.com/?spm=5176.14673561.J_8751524360.2.56702709BussF3&commodityCode=mpaas_beta#/open","homePageName":"免费试用","linkGroup":[{"linkContent":"发布包大小极致优化，节省流量和存储。"},{"linkContent":"服务迭代不再受发版限制，快速发布，快速迭代。"},{"linkContent":"业务开发效率更加优秀，一次开发，多端运行。"}]}],"title":{"mainTitle":"mPaaS","subtitle":"源自于支付宝小程序框架，亿级线上业务体量的锤炼，安全性媲美支付宝原生能力。不仅面向自有 App 投放小程序，更可快速构建打包，覆盖支付宝、淘宝、钉钉等应用。","linkUrl":"https://www.aliyun.com/product/mobilepaas/mpaas-miniprogram","btnText":"查看详情"},"visual":{"topbg":"https://img.alicdn.com/tfs/TB1bQuBIYH1gK0jSZFwXXc7aXXa-3840-740.gif","icon":"","textColor":"dark"},"dataList":[{"summary":"啦啦啦","author":"wuwu","linksUrl":"#"}],"sceneCard":[],"txt":[]}

{"$env":{"JSON":{}},"$page":{"env":"production"},"$context":{"optioninfo":{"dynamic":"ture","static":"true"},"simplifiedDisplay":"newEdition","newCard":[{"ifIcon":"img","link":"https://img.alicdn.com/tfs/TB1XY8hGYr1gK0jSZFDXXb9yVXa-1740-328.png","icon":"","iconImg":"https://img.alicdn.com/tfs/TB1zI1mn8FR4u4jSZFPXXanzFXa-232-232.png","contentLink":"https://www.aliyun.com/product/alinux","title":"Alibaba Cloud Linux 2","des":"Alibaba Cloud Linux 2(原Aliyun Linux 2) 是阿里云推出的下一代 Linux 发行版，它为云上应用程序环境提供 Linux 社区的最新增强功能，在提供云上最佳用户体验的同时，也针对阿里云基础设施做了深度的优化。","link1":"https://ecs.console.aliyun.com/#/home","btn1":"产品控制台","link2":"https://ecs-buy.aliyun.com/buyRedirect?spm=5176.cnalinux.0.0.549a6fc5YgcSNe&regionId=cn-beijing&imageId=aliyun-2.1903-x64-20G-alibase-20190327.vhd","btn2":"立即使用","btn3":"产品文档","link3":"https://help.aliyun.com/document_detail/111881.html?spm=5176.cnalinux.0.0.549a6fc5YgcSNe","infoGroup":[{"infoName":"产品入门","infoContent":{"firstContentName":"用户指导","firstContentLink":"https://help.aliyun.com/document_detail/111881.html","lastContentLink":"https://help.aliyun.com/document_detail/156214.html","lastContentName":"常见问题"}},{"infoName":"最新动态","infoContent":{"firstContentLink":"https://help.aliyun.com/document_detail/154951.html","firstContentName":"产品动态","lastContentLink":"","lastContentName":""}},{"infoName":"相关产品","infoContent":{"firstContentLink":"https://www.aliyun.com/product/ecs","firstContentName":"云服务器 ECS","lastContentName":"","lastContentLink":""}}]}],"card":[],"search":[],"infoCard":[{"bannerUrl":"https://img.alicdn.com/tfs/TB1Xf81a3gP7K4jSZFqXXamhVXa-5169-974.jpg","bannerTitle":"mPaaS 小程序","bannerContent":"源自于支付宝小程序框架，亿级线上业务体量的锤炼，安全性媲美支付宝原生能力。<br>不仅面向自有 App 投放小程序，更可快速构建打包，覆盖支付宝、淘宝、钉钉等应用。","liveButtonName":"查看详情","liveButtonLink":"https://www.aliyun.com/product/mobilepaas/mpaas-miniprogram","contentTitle":"提供即开即用的端上体验","homePageLink":"https://common-buy.aliyun.com/?spm=5176.14673561.J_8751524360.2.56702709BussF3&commodityCode=mpaas_beta#/open","homePageName":"免费试用","linkGroup":[{"linkContent":"发布包大小极致优化，节省流量和存储。"},{"linkContent":"服务迭代不再受发版限制，快速发布，快速迭代。"},{"linkContent":"业务开发效率更加优秀，一次开发，多端运行。"}]}],"title":{"mainTitle":"mPaaS","subtitle":"源自于支付宝小程序框架，亿级线上业务体量的锤炼，安全性媲美支付宝原生能力。不仅面向自有 App 投放小程序，更可快速构建打包，覆盖支付宝、淘宝、钉钉等应用。","linkUrl":"https://www.aliyun.com/product/mobilepaas/mpaas-miniprogram","btnText":"查看详情"},"visual":{"topbg":"https://img.alicdn.com/tfs/TB1bQuBIYH1gK0jSZFwXXc7aXXa-3840-740.gif","icon":"","textColor":"dark"},"dataList":[{"summary":"啦啦啦","author":"wuwu","linksUrl":"#"}],"sceneCard":[],"txt":[]}}