Now that I’ve dabbled with running RC1 (Release Candidate 1) on Linux, time to start using the pre-RC2 bits as they use the new ‘dotnet’ CLI (Command Line Interface).
I started by creating a new Ubuntu VM, just like I did before for RC1, so there would be no cross-contamination between dnvm/dnu/dnx and dotnet.
I then went to the dotnet CLI repository on github https://github.com/dotnet/cli, and since I am using Ubuntu I downloaded the Debian package per the instructions. The heavy lifting of installing was then handled by the Ubuntu Software Center.

Per the instructions, in Terminal I then executed
export DOTNET_HOME=/usr/share/dotnet/
I then created a directory for my project with the following commands
cd ~
cd Documents
mkdir Code
cd Code
mkdir ConsoleApp1
cd ConsoleApp1
I then executed
dotnet new
This creates a new empty console project, which conveniently creates a program.cs file that emits “Hello World” via the console. The files are as below
Program.cs:
using System;
namespace ConsoleApplication
{
public class Program
{
public static void Main(string[] args)
{
Console.WriteLine("Hello World!");
}
}
}
project.json:
{
"version": "1.0.0-*",
"compilationOptions": {
"emitEntryPoint": true
},
"dependencies": {
"NETStandard.Library": "1.0.0-rc2-23616"
},
"frameworks": {
"dnxcore50": { }
}
}
Note: Unlike in RC1, the “emitEntryPoint” compilation option is a requirement!
Now that we have a project.json file and a Program.cs file, we need to restore, just like we did with dnu, but instead we just issue the dotnet restore command.
Note that since we are using post RC1 tools, we need to set the source for our packages using the -s parameter to be the dotnet-core repository on MyGet, rather than the using the default NuGet repository. This most likely will not be necessary with RC2 and above.
dotnet restore -s https://myget.org/f/dotnet-core
Now we can run the program by executing
dotnet run
the result?
failed to locate CLR files at /usr/share/dotnet/runtime/coreclr
I did a little investigating and the issue is the files are being installed under /usr/share/dotnet-dev/, not /usr/share/dotnet/. I reported this as an issue on github.
I then set the DOTNET_HOME variable like so
export DOTNET_HOME=/usr/share/dotnet-dev/
I then tried the program again
dotnet run
Hello World!