WhatArch 0.1.9

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<h1 align="center">WhatArch</h1>

<p align="center"> A <a href="https://docs.microsoft.com/dotnet/core/tools/global-tools">.NET tool</a> for Windows that detects the target architecture of native binaries and .NET assemblies. </p>

<p align="center"> <a href="https://github.com/craigktreasure/WhatArch/actions/workflows/CI.yml"><img src="https://github.com/craigktreasure/WhatArch/actions/workflows/CI.yml/badge.svg?branch=main" alt="CI"></a> <a href="https://codecov.io/gh/craigktreasure/WhatArch"><img src="https://codecov.io/gh/craigktreasure/WhatArch/branch/main/graph/badge.svg?token=OmUMjUGQb8" alt="codecov"></a> <a href="https://www.nuget.org/packages/WhatArch/"><img src="https://img.shields.io/nuget/v/WhatArch" alt="NuGet"></a> <a href="https://www.nuget.org/packages/WhatArch/"><img src="https://img.shields.io/nuget/dt/WhatArch" alt="NuGet Downloads"></a> </p>

Features

• Detects native binary architectures: x86, x64, ARM64, ARM
• Identifies .NET assembly configurations: AnyCPU (.NET), AnyCPU (.NET - 32-bit preferred), x86 (.NET), x64 (.NET), ARM64 (.NET)
• Simple, script-friendly output
• No external dependencies - parses PE headers directly

Requirements

• Windows (PE files are Windows-specific)
• .NET 10 SDK

Installation

dotnet tool install --global WhatArch

Update the tool

dotnet tool update --global WhatArch

Usage

whatarch <path-to-binary>

Examples

# Native binaries
whatarch C:\Windows\System32\kernel32.dll
> x64

whatarch C:\Windows\SysWOW64\kernel32.dll
> x86

# .NET assemblies
whatarch MyApp.dll
> AnyCPU (.NET)

whatarch MyApp.x64.dll
> x64 (.NET)

Exit Codes

How It Works

WhatArch reads the PE (Portable Executable) file headers to determine the target architecture. For .NET assemblies, it also examines the CLR header and CorFlags to distinguish between AnyCPU and platform-specific builds.