Installing .NET Core on Ubuntu-摘自网络

Installing .NET Core on Linux

By Zlatko Knezevic

These instructions will lead you through acquiring the .NET Core DNX SDK via the .NET Version Manager (DNVM) and running a “Hello World” demo on Linux.

.NET Core NuGet packages and the .NET Core DNX SDKs are available on the ASP.NET ‘vnext’ myget feed, which you can more easily view on gallery for the feed.

Setting up the environment

These instructions have been written and tested on Ubuntu 14.04 LTS, since that is the main Linux distribution the .NET Core team uses. These instructions may succeed on other distributions as well. We are always accepting new pull requests on our GitHub repo that address running on other Linux distributions. The only requirement is that they do not break the ability to use Ubuntu 14.04 LTS.

Installing the required packages

Install the libunwind8, libssl-dev and unzip packages:

sudo apt-get install libunwind8 libssl-dev unzip

Certificates

You need to import trusted root certificates in order to restore NuGet packages. You can do that with the mozroots tool.

mozroots --import --sync

Installing DNVM

You need DNVM as a starting point. DNVM enables you to acquire one or multiple .NET Execution Environments (DNX). DNVM is a shell script and does not require .NET. You can use the below command to install it.

curl -sSL https://raw.githubusercontent.com/aspnet/Home/dev/dnvminstall.sh | DNX_BRANCH=dev sh && source ~/.dnx/dnvm/dnvm.sh

Installing the .NET Core DNX

You first need to acquire the CoreCLR DNX.

dnvm install latest -r coreclr -u

You can see the currently installed DNX versions with dnvm list.

dnvm list

Active Version              Runtime Arch Location             Alias
------ -------              ------- ---- --------             -----
  *    1.0.0-beta5-11649    coreclr x64  ~/.dnx/runtimes

Using a specific runtime

You can choose which of the installed DNXs you want to use with dnvm use, specifying arguments that are similar to the ones used when installing a runtime.

dnvm use -r coreclr -arch x86 1.0.0-beta5-11649
Adding ~/.dnx/runtimes/dnx-coreclr-win-x86.1.0.0-beta5-11649/bin
to process PATH

dnvm list

Active Version              Runtime Arch Location             Alias
------ -------              ------- ---- --------             -----
  *    1.0.0-beta5-11649    coreclr x64  ~/.dnx/runtimes

See the asterisk in the listing above? It’s purpose is to tell you which runtime is now active. “Active” here means that all of the interaction with your projects and .NET Core will use this runtime.

That’s it! You now have the .NET Core runtime installed on your machine and it is time to take it for a spin.

Write your App

his being an introduction-level document, it seems fitting to start with a “Hello World” app. Here’s a very simple one you can copy and paste into a CS file in a directory.

using System;

public class Program
{
    public static void Main (string[] args)
    {
        Console.WriteLine("Hello, Linux");
        Console.WriteLine("Love from CoreCLR.");
    }
}

A more ambitious example is available on the corefxlab repo that will print out a pretty picture based on the argument you provide at runtime. If you wish to use this example, simply save the C# file to a directory somewhere on your machine.

The next thing you will need is a project.json file that will outline the dependencies of an app, so you can actually run it. Use the contents below, it will work for both examples above. Save this file in a directory next to the CS file that contains your code.

{
    "version": "1.0.0-*",
    "dependencies": {
    },
    "frameworks" : {
        "dnx451" : { },
        "dnxcore50" : {
            "dependencies": {
                "System.Console": "4.0.0-beta-*"
            }
        }
    }
}

Run your App

You need to restore packages for your app, based on your project.json, with dnu restore.

dnu restore -s https://www.myget.org/F/aspnetvnext/
dnx run

Hello, Linux
Love from CoreCLR.

遇到问题：

No command 'dnx' found
解决方案： dnvm upgrade

Building .NET Core from source

.NET Core is an open source project that is hosted on GitHub. This means that you can, at any given time, clone the repository and build .NET Core from source. This is a more advanced scenario that is usually used when you want to add features to the .NET runtime or the BCL or if you are a contributor to these projects. The detailed instruction on how to build .NET Core windows can be found in theBuild CoreCLR on Linux on GitHub.

http://docs.asp.net/en/latest/getting-started/installing-on-linux.html

asp.net docker

https://github.com/aspnet/aspnet-docker/blob/master/1.0.0-rc1-update1-coreclr/Dockerfile

//设置文件夹权限

you can also use chmod in this way:
who:

u=user (owner) g=group o=other a=all

action:

+=add -=subtract ==set

permission:

r=read w=write x=execute X=special execute (skip files without existing execute permissions) s=setuid/setgid t=sticky

for instance, set execute for files with at least one execute bit set plus read/write for all files in /path/to/set for the owner and his group and set execute for files with at least one execute bit set plus read for others:

Code:

chmod -R ug=rwX,o=rX /path/to/set/