PowerShell和Bash的定义与使用

PowerShell是运行在windows平台的脚本，而Bash是运行在linux平台的脚本

现在bash能做的事情，PowerShell也能做，PowerShell的强大之处是它可以管理windows服务器（特别是域domain），现在的开源PowerShell 也可以管理Linux和Mac（通过PSRP）。

下载最新的PS程序

安装后它会有powershell和它的开发IDE工具，ISE,非常不错！

一、进行powershell的程序

二、创建脚本，简单的Helloworld.ps1

任务的自动化是以程序文件或者可执行脚本文件为基础的，PowerShell也支持将命令列表做成脚本文件来执行。以下是Helloworld.ps1脚本文件的内容：

$a = "Hello World!"$a
echo $a > a.txt
dir a.txt

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Helloworld.ps1脚本文件的执行情况结果如下：

PS E:\>.\Helloworld.ps1 --注意在执行它时要加.\，表示当前上当下的文章，类似于centos里的文件执行方法


Hello world!

Directory: E:\

Mode LastWriteTime Length Name

---- ------------- ------ ----

-a--- 5/30/2017 4:56 PM 16 a.txt


下面是在eShopOnContainers上的一个例子，分别用ps和bash实现了程序的部署

#!/bin/bash
declare -a projectList=('../src/Services/Catalog/Catalog.API''../src/Services/Basket/Basket.API''../src/Services/Ordering/Ordering.API''../src/Services/Identity/Identity.API''../src/Web/WebMVC''../src/Web/WebSPA''../src/Web/WebStatus')

# Build SPA app
# pushd $(pwd)../src/Web/WebSPA
# npm run build:prodfor project in "${projectList[@]}"doecho -e "\e[33mWorking on $(pwd)/$project"echo -e "\e[33m\tRemoving old publish output"pushd $(pwd)/$project
    rm -rf obj/Docker/publish
    echo -e "\e[33m\tRestoring project"dotnet restore
    echo -e "\e[33m\tBuilding and publishing projects"dotnet publish -o obj/Docker/publish
    popd
done

# remove old docker images:
images=$(docker images --filter=reference="eshop/*" -q)if [ -n "$images" ]; then
    docker rm $(docker ps -a -q) -f
    echo "Deleting eShop images in local Docker repo"echo $images
    docker rmi $(docker images --filter=reference="eshop/*" -q) -f
fi

# No need to build the images, docker build or docker compose will
# do that using the images and containers defined in the docker-compose.yml file.

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powershell代码如下

Param([string] $rootPath)
$scriptPath = Split-Path $script:MyInvocation.MyCommand.Path

Write-Host "Current script directory is $scriptPath" -ForegroundColor Yellowif ([string]::IsNullOrEmpty($rootPath)) {
    $rootPath = "$scriptPath\.."}
Write-Host "Root path used is $rootPath" -ForegroundColor Yellow

$projectPaths = 
    @{Path="$rootPath\src\Web\WebMVC";Prj="WebMVC.csproj"},
    @{Path="$rootPath\src\Web\WebSPA";Prj="WebSPA.csproj"},
    @{Path="$rootPath\src\Services\Identity\Identity.API";Prj="Identity.API.csproj"},
    @{Path="$rootPath\src\Services\Catalog\Catalog.API";Prj="Catalog.API.csproj"},
    @{Path="$rootPath\src\Services\Ordering\Ordering.API";Prj="Ordering.API.csproj"},
    @{Path="$rootPath\src\Services\Basket\Basket.API";Prj="Basket.API.csproj"}
    @{Path="$rootPath\src\Web\WebStatus";Prj="WebStatus.csproj"}

$projectPaths | foreach {
    $projectPath = $_.Path
    $projectFile = $_.Prj
    $outPath = $_.Path + "\obj\Docker\publish"$projectPathAndFile = "$projectPath\$projectFile"Write-Host "Deleting old publish files in $outPath" -ForegroundColor Yellow
    remove-item -path $outPath -Force -Recurse -ErrorAction SilentlyContinue
    Write-Host "Publishing $projectPathAndFile to $outPath" -ForegroundColor Yellow
    dotnet restore $projectPathAndFile
    dotnet build $projectPathAndFile
    dotnet publish $projectPathAndFile -o $outPath
}


########################################################################################
# Delete old eShop Docker images
########################################################################################

$imagesToDelete = docker images --filter=reference="eshop/*" -q

If (-Not $imagesToDelete) {Write-Host "Not deleting eShop images as there are no eShop images in the current local Docker repo."} 
Else 
{
    # Delete all containers
    Write-Host "Deleting all containers in local Docker Host"docker rm $(docker ps -a -q) -f
    
    # Delete all eshop images
    Write-Host "Deleting eShop images in local Docker repo"Write-Host $imagesToDelete
    docker rmi $(docker images --filter=reference="eshop/*" -q) -f
}

# WE DON'T NEED DOCKER BUILD AS WE CAN RUN "DOCKER-COMPOSE BUILD" OR "DOCKER-COMPOSE UP" AND IT WILL BUILD ALL THE IMAGES IN THE .YML FOR US

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自己感觉，这两个东西在以后的程序部署上都会发挥各自强大的力量！

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