Flutter CLI commands All In One Flutter run key commands. r Hot reload. R Hot restart. h Repeat this help message. d Detach (terminate "flutter run" but leave application running). c Clear the screen q Quit (terminate the application on the devi…

Welcome to Linux world! Introduction and Basic commands--Part one J.C 2018.3.11 Chapter 1 What Is Linux? Linux is a Unix-like open source operating system. At the core of the operating system is the Linux kernel. It acts as the intermediary between t…

aaaconfig                  Configure RADIUS for AAA servicesad                         Specifies all administration domain (AD)-level                           operationsag                         Configure the Access Gateway featureagshow           …

1.创建 Flutter 工程 flutter create <output directory> D:\notebook\flutter\projects\ui_tutorial\layout>flutter create layout_app Creating project layout_app... layout_app\.gitignore (created) layout_app\.idea\libraries\Dart_SDK.xml (created) layout_ap…

应用发现 flask命令在Flask库安装后可使用,使用前需要正确配置FLASK_APP环境变量以告知用户程序所在位置.不同平台设置方式有所不同. Unix Bash (Linux, Mac, etc.): $ export FLASK_APP=hello $ flask run Windows CMD: > set FLASK_APP=hello > flask run Windows PowerShell: > $env:FLASK_APP="hello" >…

Flutter环境搭建 配置环境变量 用户变量 FLUTTER_STORAGE_BASE_URL : https://storage.flutter-io.cn PUB_HOSTED_URL : https://pub.flutter-io.cn 由于是在国内,所以需要配置一个可靠的镜像站点,也可以选择清华大学TUNA FLUTTER_STORAGE_BASE_URL: https://mirrors.tuna.tsinghua.edu.cn/flutter PUB_HOSTED_URL: ht…

how to read the system information by using the node cli tool? node cli & get system info demos $ nest info $ taro info $ flutter doctor https://docs.nestjs.com/cli/overview#command-overview https://taro-docs.jd.com/taro/docs/guide/#环境准备 https://flut…

最近总是收到一个备份脚本的失败邮件,脚本是之前同事写的,没有加入任何有调试信息,及有用的日志 于是去分析 ,脚本中有一条 aws s3 sync $srclocal  $dsts3 命令,然后根据这条命令的执行状态码判断成功与失败 失败后,会发送失败的提醒邮件,然后去s3界面去看,s3 sync备份任务又好像是的成功的,主要的核心的备份文件都是在的 难道是部分文件备份失败,于是加入调试信息,输出stderr信息及exit code,最后return code 为 2 最后,去查询了一下,aws…

2016-10-01/21:07:24 http://www.cnblogs.com/wuchanming/p/4019660.htmlhttp://czmmiao.iteye.com/blog/2055805 http://lookingdream.blog.51cto.com/5177800/1825286 还有些细节要仔细看 官网与相关标准 http://www.open-iscsi.com/ https://github.com/open-iscsi/open-iscsi http://…

Managing a node remotely by using the Service Processor The Service Processor (SP) is a remote management device that enables you to access, monitor, and troubleshoot a node remotely. The SP provides the following capabilities: The SP enables you to…

Table of ContentsAbout This Document...................................................................................................................................14Purpose and Audience ............................................................…

原文地址:http://www.journaldev.com/7989/key-components-and-internals-of-spring-boot-framework In my previous post “Introduction to Spring Boot”, we have discussed about Spring Boot basics. Now we will discuss about “What are the main components of Spring…

本次学习使用的是mininet的VM-image,所以安装过程就先忽略掉了,主要学习使用方法. 同时完成了在虚拟机上配置minient和Wireshark, 可以直接在虚拟机上操作. 1. Everyday mininet usage 1.1 Display Startup Options 使用 sudo mn -h 获取相关帮助信息: 1.2 启动wireshark 是启动wireshark,这里就有问题了,对于mininet提供的VM来说,并不具有图形界面,无法启动wireshark,是不是…

How to block a fake DHCP server without enabling DHCP snooping? Scenario How to block a fake DHCP server without enabling DHCP snooping and still fulfill the following requirements? 1. The trusted DHCP server is connected on port 40. 2. Block the fak…

本文转自:http://devgirl.org/2014/01/20/ionic-mobile-ui-framework-for-phonegapcordova-developers/ Ionic is both a CSS framework as well as a JavaScript UI library. If you’re an AngularJS developer you will be right at home as Ionic uses AngularJS Extensio…

Migrations¶ 4 of 4 people found this helpful The Contoso University sample web application demonstrates how to create ASP.NET Core 1.0 MVC web applications using Entity Framework Core 1.0 and Visual Studio 2015. For information about the tutorial ser…

Centos7 install Openstack - (第三节)添加镜像服务(Glance) 我的blog地址:http://www.cnblogs.com/caoguo 该文根据openstack官方文档配置 官方文档地址: http://docs.openstack.org/juno/install-guide/install/yum/content/# 0x01. 基本安装配置(控制节点) 一) To configure prerequisites  1. To create the d…

nova image-listERROR (ClientException): The server has either erred or is incapable of performi9e-6cdca5eee7b2) UNANSWERED Ask Your Question   0   glance image-list is fine but, nova image-list error nova glance asked Dec 14 '15 recital 36 ●2 ●2 ●7 u…

http://www.opensourcetesting.org/unit_c.php API Sanity AutoTest Description: An automatic generator of basic unit tests for a shared C/C++ library. It helps to quickly generate simple ("sanity" or "shallow"-quality) test cases for ever…

在我们开发程序的过程中,数据库的结构也是不断调整的.我们的开发中要保证代码和数据库库的同步.因为我们的应用离不开数据库.例如: 在开发过程中,我们经常需要增加一个新的表,或者我们后期投入运营的产品,可能需要为某一列添加索引.我们必须保持数据结构和代码的一致性.如果代码和数据库不同步,可能整个系统将无法正常运行.出于这个原因.yii提供了一个数据库迁移工具,可以保持代码和数据库是同步.方便数据库的回滚和更新. 下面的步骤说明了我们如何能够在开发过程中使用的数据库迁移: Tim 创建一个新的迁任务(…

数据库的结构也同源代码一样随着我们开发的进行而不断的发生着改变.在开发过程中,一般的我们需要像管理我们的源代码一样记录下数据库结构的整个变化过程,以便代码还原到指定版本后,数据库能同步的还原到指定的版本与源代码同步.为了方便这一操作,Yii给我们提供了Yiic migrate 这个命令,对应的也有一个 CDbMigration 类来描述各个版本之间的信息,从而实现通过命令来还原或者更新数据库到指定的版本.   Yii的数据迁移代码都存放在 /protected/migrations 文件夹中.如…

<preface p2 by Ruiy,我就在开头简单奇葩两句!> 老周被查,涉及到政治问题,我先就不聊了,但Ruiy叹那,都查到七*务了,土党唱哪一出! 能基本玩转OpenNebula都认为它很奇葩!比它小岁吧的openStack就比较单纯(dev Language aspect,人家功能可是一个 “牛”字,概之,OpenStack的设计初衷和市场定位PublicCloud),one适合在vDCs中生存,虚机的allInfo 都设计到接口,因此在one中可一般可看到虚机的详细创建调度,操作日…

Docker 是一种新型的虚拟化技术,它的目标在于实现轻量级操作系统的虚拟化.相比传统的虚拟化方案,Docker 虚拟化技术有一些很明显的优势:启动容器的速度明显快于传统虚拟化技术,同时创建一台虚拟机占用的资源也要远远小于传统的虚拟技术.Swarm 是 Docker 集群化的技术,而 Swarm 集群化 Docker 离不开服务发现.Consul 能够解决 Swarm 的服务发现问题.本文将介绍 Swarm 如何使用 Consul 作为服务发现. Docker Swarm 服务发现 Docker…

深入学习webpack(一) 模块化的相关库和工具已经很多了,包括require.js.sea.js和一些工程化工具webpack.gulp.grant.那么我们该如何选择呢? 其实,我们只需要掌握了其中一种模块化的方案即可,因为这里最重要的是思想,而不是工具.在这些工具之中,webpack无疑是非常火的,并且在现在和未来也将大有可为,所以,这篇文章就好好的说说webpack! 参考文章: webpack官方文档 什么是webpack? webpack是一款打包工具,其中的modules包括cs…

Linux Essentials Certification Globbing ls ?.txt --- ? stands for one character while * means one or more characters ls [F]*.txt --- list file starting with F ls [F]*.txt --- list file starting with F ls f[igh] --- the first character is f, but the s…

LVM Logical Volume Manager Volume management creates a layer of abstraction over physical storage, allowing you to create logical storage volumes. Logical volumes provide the following advantages over using physical storage directly: Flexible capacit…

今天登陆vsphere web-client时候,报错如下: Failed to connect to VMware Lookup Service https://vc-test.cebbank.com:7444/lookupservice/sdk - SSL certificate verification failed. 放狗搜了下和自己测了下,根据问题类型有如下两种解决方案,我先说下如何去获取错误的详细信息,然后再给大家分别上两个解决办法. 1.获取错误日志 VSphere服务器进入%TE…

LVM Logical Volume Manager Volume management creates a layer of abstraction over physical storage, allowing you to create logical storage volumes. Logical volumes provide the following advantages over using physical storage directly: Flexible capacit…

docker 18.09 官方:https://docs.docker.com/ 一 简介 Docker is a platform for developers and sysadmins to develop, deploy, and run applications with containers. The use of Linux containers to deploy applications is called containerization. Containers are no…

## List Docker CLI commandsdockerdocker container --help ## Display Docker version and infodocker --versiondocker versiondocker info ## Execute Docker imagedocker run hello-world ## List Docker imagesdocker image ls ## List Docker containers (running…