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 hwapp cd hwapp dotnet 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objbin/Debug/netcoreapp1.0/hwapp.dll bin/Debug/netcoreapp1.0/hwapp.deps.json bin/Debug/netcoreapp1.0/hwapp.pdb bin/Debug/netcoreapp1.0/hwapp.runtimeconfig.dev.json bin/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.dll Hello 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。
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