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Why don't any of these methods work for installing .Net Core SDK & runtime on 22.04 (Jammy Jellyfish)?

rated 0 times [ 2] [ 0] / answers: 1 / hits: 6763 / 3 Years ago, wed, september 1, 2021, 12:08:33

I went to the following official Microsoft link to install .NET Core 6.x (SDK & runtime) and they would not work.

Basically, it tells you to :

wget https://packages.microsoft.com/config/ubuntu/22.04/packages-microsoft-prod.deb -O packages-microsoft-prod.deb

sudo dpkg -i packages-microsoft-prod.deb

rm packages-microsoft-prod.deb

Then to install SDK you are supposed to run:

sudo apt-get update && sudo apt-get install -y dotnet-sdk-6.0

Then to install runtime it says to run:

sudo apt-get update && sudo apt-get install -y aspnetcore-runtime-6.0

But when I ran all of that, I got a weird thing where the runtime was "half installed".

I could run $ dotnet --list-sdks and it wouldn't report any SDK.

Also, I couldn't run the simple command $ dotnet --version It would state that no SDKs were installed and the command couldn't run. Very confusing.

I also got an error like:

Unable to locate package dotnet-sdk-6.0

Microsoft says to choose the following link to resolve that: APT troubleshooting section.

Tried Snap
I also tried installing the snap. Again, dotnet runtime still didn't work properly.
I tried various removing and rebooting and many options but could never get the SDK installed properly.

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naldis

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answered 3 Years ago tonhorn · Accepted Answer

Only Manual Install Works

I finally installed .NET Core 6.x SDK & runtime manually, by following the steps at: https://docs.microsoft.com/en-us/dotnet/core/install/linux-scripted-manual#manual-install

I downloaded .NET Core 6.x SDK & runtime tar gz.

Next, I opened a terminal and I ran each of the following, one at a time:

$ DOTNET_FILE=dotnet-sdk-6.0.400-linux-x64.tar.gz

$ export DOTNET_ROOT=$(pwd)/.dotnet

$ mkdir -p "$DOTNET_ROOT" && tar zxf "$DOTNET_FILE" -C "$DOTNET_ROOT"

$ export PATH=$PATH:$DOTNET_ROOT:$DOTNET_ROOT/tools

Right after I did that I was able to run:

$ dotnet --version and I saw the appropriate output: 6.0.400

Next, I tried listing the SDKS:

$ dotnet --list-sdks and I saw: 6.0.400 [/home/raddev/Downloads/.dotnet/sdk]

I built a sample program and ran it and now everything works.

It seems you have to manually do this install.

After that I had to edit my ~/.bashrc and add the two following lines as the last two lines, so that appropriate folders would always be available via path.

export PATH=$PATH:$HOME/.dotnet

export DOTNET_ROOT=$HOME/.dotnet

Update (2022-08-16)

This article was just released today:
Microsoft and Canonical announce native .NET availability in Ubuntu 22.04 hosts and containers -- Sub-title Install .NET 6 with one apt install command.

Here's the main point: