好奇环境是怎样的，先不看任何东西，自己翻翻看。

• 不想折腾环境，运行一个docker容器就一把搞定了。

docker run -it microsoft/dotnet:latest

• 新建一个工程，流行的风格，嗯，挺上路的吗。

mkdir hwappcd hwappdotnet new

看看目录结构

-rwxr--r-- 1 root root    202 Jun 22 03:31 Program.cs*-rwxr--r-- 1 root root    348 Jun 22 03:31 project.json*

挑个小刺：每个文件居然全设定成了可执行属性，看着就怪啊。 Program.cs就一个Hellow World没啥看头。 project.json:

{  "version": "1.0.0-*",  "buildOptions": {    "debugType": "portable",    "emitEntryPoint": true  },  "dependencies": {},  "frameworks": {    "netcoreapp1.0": {      "dependencies": {        "Microsoft.NETCore.App": {          "type": "platform",          "version": "1.0.0"        }      },      "imports": "dnxcore50"    }  }}

也还好。 dnxcore50的名称以后可能会换掉。哎，.NET本身的名称都不好，上梁不正下梁歪。

小刺：最好直接换成yaml，都有点烦了JSON了，那双引号，什么破设计，另外也不能写注释。所以人家SpringBoot默认都换成yaml了。

• 开始安装依存lib然后执行了

dotnet restore     #####这个命令吓人，求你改掉吧。实际是相当于npm install的意思，安装依赖lib#####dotnet run

自然是得到了Hello World。

编译生成的目录和Windows下的习惯一样，bin/Debug,和obj

bin/Debug/netcoreapp1.0/hwapp.dllbin/Debug/netcoreapp1.0/hwapp.deps.jsonbin/Debug/netcoreapp1.0/hwapp.pdbbin/Debug/netcoreapp1.0/hwapp.runtimeconfig.dev.jsonbin/Debug/netcoreapp1.0/hwapp.runtimeconfig.json

• 看看这个dotnet是何方神圣

root@88dab4dc4160:/hwapp# ls -lF `which dotnet`lrwxrwxrwx 1 root root 24 Jun 30 21:00 /usr/bin/dotnet -> /usr/share/dotnet/dotnet*

干脆把/usr/share/dotnet/下的东西都翻出来看看

./dotnet./host/fxr/1.0.1/libhostfxr.so./sdk/1.0.0-preview2-003121/corehost  #这个显然是主角luancher了./sdk/1.0.0-preview2-003121/libhostfxr.so./sdk/1.0.0-preview2-003121/libhostpolicy.so./shared/Microsoft.NETCore.App/1.0.0/corehost./shared/Microsoft.NETCore.App/1.0.0/dotnet./shared/Microsoft.NETCore.App/1.0.0/libclrjit.so      #JIT Compiler./shared/Microsoft.NETCore.App/1.0.0/libcoreclr.so     #CLR运行时./shared/Microsoft.NETCore.App/1.0.0/libcoreclrtraceptprovider.so./shared/Microsoft.NETCore.App/1.0.0/libdbgshim.so ./shared/Microsoft.NETCore.App/1.0.0/libhostfxr.so./shared/Microsoft.NETCore.App/1.0.0/libhostpolicy.so./shared/Microsoft.NETCore.App/1.0.0/libmscordaccore.so./shared/Microsoft.NETCore.App/1.0.0/libmscordbi.so./shared/Microsoft.NETCore.App/1.0.0/libsos.so./shared/Microsoft.NETCore.App/1.0.0/libsosplugin.so./shared/Microsoft.NETCore.App/1.0.0/libuv.so    ##居然你也在。异步编程用的。Node.JS里用它做event loop的。./shared/Microsoft.NETCore.App/1.0.0/System.Globalization.Native.so./shared/Microsoft.NETCore.App/1.0.0/System.IO.Compression.Native.so./shared/Microsoft.NETCore.App/1.0.0/System.Native.so./shared/Microsoft.NETCore.App/1.0.0/System.Net.Http.Native.so./shared/Microsoft.NETCore.App/1.0.0/System.Net.Security.Native.so./shared/Microsoft.NETCore.App/1.0.0/System.Security.Cryptography.Native.so

这应该就是最核心的干货了。

还有其他好多dll的，和xarmarine里的那一套比较像

./sdk/1.0.0-preview2-003121/.version./sdk/1.0.0-preview2-003121/csc.deps.json./sdk/1.0.0-preview2-003121/csc.dll./sdk/1.0.0-preview2-003121/csc.runtimeconfig.json./sdk/1.0.0-preview2-003121/dotnet.deps.json./sdk/1.0.0-preview2-003121/dotnet.dll./sdk/1.0.0-preview2-003121/dotnet.runtimeconfig.json./sdk/1.0.0-preview2-003121/Microsoft.ApplicationInsights.dll./sdk/1.0.0-preview2-003121/Microsoft.DiaSymReader.dll./sdk/1.0.0-preview2-003121/Microsoft.DotNet.Archive.dll..../sdk/1.0.0-preview2-003121/Microsoft.DotNet.Configurer.dll..../sdk/1.0.0-preview2-003121/Microsoft.Extensions.Testing.Abstractions.dll./sdk/1.0.0-preview2-003121/Newtonsoft.Json.dll./sdk/1.0.0-preview2-003121/NuGet.Client.dll./sdk/1.0.0-preview2-003121/NuGet.CommandLine.XPlat.dll..../sdk/1.0.0-preview2-003121/NuGet.RuntimeModel.dll./sdk/1.0.0-preview2-003121/NuGet.Versioning.dll./sdk/1.0.0-preview2-003121/nuGetPackagesArchive.lzma./sdk/1.0.0-preview2-003121/runtimes/unix/lib/netstandard1.3/System.Diagnostics.TraceSource.dll./sdk/1.0.0-preview2-003121/runtimes/win-x64/native/Microsoft.DiaSymReader.Native.amd64.dll..../sdk/1.0.0-preview2-003121/runtimes/win8-arm/native/Microsoft.DiaSymReader.Native.arm.dll./sdk/1.0.0-preview2-003121/System.Diagnostics.TextWriterTraceListener.dll..../sdk/1.0.0-preview2-003121/System.Xml.XmlSerializer.dll./shared/Microsoft.NETCore.App/1.0.0/Microsoft.CodeAnalysis.CSharp.dll..../shared/Microsoft.NETCore.App/1.0.0/Microsoft.VisualBasic.dll  #VB.NET难道也要支持，扔了算了。..../shared/Microsoft.NETCore.App/1.0.0/Microsoft.Win32.Registry.dll  #Registry??./shared/Microsoft.NETCore.App/1.0.0/mscorlib.dll./shared/Microsoft.NETCore.App/1.0.0/mscorlib.ni.dll./shared/Microsoft.NETCore.App/1.0.0/sosdocsunix.txt./shared/Microsoft.NETCore.App/1.0.0/System.AppContext.dll..../shared/Microsoft.NETCore.App/1.0.0/System.IO.dll  #亲切..../shared/Microsoft.NETCore.App/1.0.0/System.Native.a  #这是给谁用啊./shared/Microsoft.NETCore.App/1.0.0/System.Net.Http.dll..../shared/Microsoft.NETCore.App/1.0.0/System.Reflection.dll..../shared/Microsoft.NETCore.App/1.0.0/System.Runtime.dll..../shared/Microsoft.NETCore.App/1.0.0/System.Runtime.InteropServices.dll  #这是什么节奏， Native调用吗？..../shared/Microsoft.NETCore.App/1.0.0/System.Runtime.Loader.dll..../shared/Microsoft.NETCore.App/1.0.0/System.Security.Cryptography.Csp.dll..../shared/Microsoft.NETCore.App/1.0.0/System.Security.Cryptography.OpenSsl.dll..../shared/Microsoft.NETCore.App/1.0.0/System.Text.RegularExpressions.dll..../shared/Microsoft.NETCore.App/1.0.0/System.Xml.ReaderWriter.dll./shared/Microsoft.NETCore.App/1.0.0/System.Xml.XDocument.dll...

另外，机器里面还有一些.nuget管理包用的目录，整体很干净。

继续吐槽，NuGet这样的名称还不趁机改掉啊，难受死了。

回头再接着分析。

• 看看corehost，和如何debug。 看了corehost的命令行，回到hwap目录下试着用一下

root@88dab4dc4160:/hwapp# /usr/share/dotnet/shared/Microsoft.NETCore.App/1.0.0/corehost ./bin/Debug/netcoreapp1.0/hwapp.dllHello World!

看来就是他了，好了，入口找到了。

再看看详细信息，下次再分析一下。

root@88dab4dc4160:/hwapp# COREHOST_TRACE=1 /usr/share/dotnet/shared/Microsoft.NETCore.App/1.0.0/corehost ./bin/Debug/netcoreapp1.0/hwapp.dll 2>&1 |less一堆结果爆屏,不贴了，能够看到用到什么文件。...

dotnet和corehost的命令行帮助太少，看不出如何debug，但肯定能够调试，只是这些细节看来还没做完备啊。

下次在看看如何debug。然后在学学ASP.NET Core。