.NET Core
.NET Core is a new FOSS software framework from Microsoft for C#, Visual Basic, and F#. It is designed to be cross-platform, modular and apt for modern applications, as opposed to its predecessor, the .NET Framework.
Contents
Installation
If you only want to run .NET Core managed applications, install the dotnet-runtime package.
To build apps with .NET Core, install dotnet-sdk as well.
Microsoft recommends using Visual Studio Code , their Electron-based FOSS IDE, to build & debug .NET Core apps.
~/.dotnet/tools
to PATH
, otherwise dotnet tools with not work from shell.Telemetry
Telemetry is enabled by default but can be disabled by setting environment variable DOTNET_CLI_TELEMETRY_OPTOUT=1
.
Troubleshooting
"the required library libhostfxr.so could not be found" error
Some of the dotnet SDK tools (for example libman, dotnet-watch etc.) may expect you to have the environment variable DOTNET_ROOT
pre-configured. If it's not, an error like this one could be observed: [1]
A fatal error occurred, the required library libhostfxr.so could not be found. If this is a self-contained application, that library should exist in [/home/my_user/.dotnet/tools/.store/microsoft.web.librarymanager.cli/1.0.172/microsoft.web.librarymanager.cli/1.0.172/tools/netcoreapp2.1/any/]. If this is a framework-dependent application, install the runtime in the default location [/usr/share/dotnet] or use the DOTNET_ROOT environment variable to specify the runtime location.
The workaround is to manually export DOTNET_ROOT
in your shell:
~/.bashrc
export DOTNET_ROOT=/opt/dotnet
SDK specified could not be found
This is believed to caused by a conflict between the Mono and MSBuild SDK libs and the dotnet core ones. To fix this export the path manually in your shell (replacing the version number as necessary) e.g:
~/.bashrc
export MSBuildSDKsPath="/opt/dotnet/sdk/2.2.108/Sdks/";