<style> .reveal .slides { text-align: left; } .miku_center { text-align: center; } </style> # <div class=miku_center>初見PowerShell</div> <div style="text-align: right"> ##### Mikucat  </div> [TOC] --- ## Why PowerShell 1. 使用 Cmdlet 而非可執行檔 1. 命令結合物件導向 2. 跨平台開源 4. 取代命令提示字元的自動化腳本 --- ## 1. Cmdlet it go ---- #### Cmdlet 念作 command-let PowerShell 裡的指令就是它 ---- #### Cmdlet 特性 - Cmdlet 是 .NET 類別的實例，不是可執行檔 - 參數解析、錯誤處理、輸出格式等等<br>PowerShell 會解析好 - 使用 "動詞+名詞" 命名 Cmdlet --- ## 2. 披著命令的皮 Cmdlet 本身 -> Object 變數、參數 -> Object Cmdlet 回傳值 -> Object 管線傳遞 -> Object ---- ### 哈哈 是我啦: 物件導向 C#: ```csharp int[] array = {1,8,999,1000}; array.Where( x => x > 100).Sum(); ``` PowerShell: ```powershell $array = @(1,8,999,1000) ($array | where {$_ -gt 100} | measure -Sum).Sum ``` ---- ### 調用 C# 方法 ```powershell $client = New-Object System.Net.WebClient $client.DownloadString('https://chocolatey.org/install.ps1') ``` --- ## 3. 我微軟的夢想<br>就是==征服全世界== ---- PowerShell Core 7.0 - 基於 .Net Core - 相容 Unix 格式路徑與命名 - 支援 macOS Debian RHEL etc. - Null運算 --- ## 4. 只是多了ls的命令提示字元?  ---- ### PS 2.0 預設啟用的 Cmdlet 數量  ---- ### 範例: 全自動安裝MinGW + CLion ```powershell $MINGW_URL = 'https://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win64/Personal%20Builds/mingw-builds/8.1.0/threads-posix/seh/x86_64-8.1.0-release-posix-seh-rt_v6-rev0.7z' $MINGW_ZIP = 'mingw64.7z' $CLION_URL = 'https://download.jetbrains.com/cpp/CLion-2019.3.5.exe' $CLION_EXE = 'clion.exe' $CLION_INSTALL_DIR = 'C:\CLion' $CLION_CONFIG_URL = 'https://download.jetbrains.com/cpp/silent.config' $CLION_CONFIG = 'silent.config' # Change Work Dir Set-Location $PSScriptRoot $currentPrincipal = New-Object Security.Principal.WindowsPrincipal([Security.Principal.WindowsIdentity]::GetCurrent()) if (-Not $currentPrincipal.IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)) { $PSCommandPath = $MyInvocation.PSCommandPath Start-Process powershell.exe @("-File $PSCommandPath") -Verb runAs exit } # Kill TrAsH cHyIoU Rename-Item "C:\Program Files (x86)\CHIYOU\REDAgent.exe" "BLUEAgent.exe" -Force taskkill.exe /F /T /IM "REDAgent.exe" taskkill.exe /F /T /IM "BLUEAgent.exe" function dl ($url, $file) { .\aria2c.exe --dir=$PSScriptRoot --out=$file $url --file-allocation=none } # MinGW-w64 dl -url $MINGW_URL -file $MINGW_ZIP .\7z.exe x -oC:\ $MINGW_ZIP # Edit System Path $path = [System.Environment]::GetEnvironmentVariable("Path", "Machine").Split(";") | Where-Object { $_ -notlike "*msys*"} [System.Environment]::SetEnvironmentVariable("Path", 'C:\mingw64\bin;' + ($path -join ';'), "Machine") # CLion dl -url $CLION_URL -file $CLION_EXE dl -url $CLION_CONFIG_URL -file $CLION_CONFIG Start-Process $CLION_EXE @("/S", "/CONFIG=$CLION_CONFIG", "/D=$CLION_INSTALL_DIR") -Wait # Logout shutdown.exe /l ``` ---- ### C# Invoke DLL over Powershell ```powershell add-type @" using System; using System.Runtime.InteropServices; public static partial class User32 { [DllImport("user32.dll", CharSet=CharSet.Auto)] public static extern Int32 MessageBox(IntPtr hWnd,String text,String caption,int options); } "@ $chosen = [User32]::MessageBox(0, 'Miku is my waifu!' , 'This is a truth', 4) Write-Output $(if ($chosen -eq 6) {"Yeah!"} else {"You are a heretic! (angry)"}) ``` --- ## Reference [PowerShell 文件 - PowerShell | Microsoft Docs](https://docs.microsoft.com/zh-tw/powershell/) --- ## <div class=miku_center>END</div>