Docs: Unable to install on Ubuntu20.04

[v-radelg]

@F-Unction commented 2 days ago — with docs.microsoft.com

dotnet-sdk-3.1-> dotnet-runtime-3.1-> dotnet-runtime-deps-3.1-> libicu63
But only libicu66 in the system

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Document Details

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• ID: b5cbe58d-ad05-60fd-47d7-0d9ccfeecde4
• Version Independent ID: c9773e9b-dbc1-cb7b-b303-287cf8bd354c
• Content: Install .NET Core on Ubuntu 19.10 package manager - .NET Core
• Content Source: docs/core/install/linux-package-manager-ubuntu-1910.md
• Product: dotnet-core
• GitHub Login: @Thraka
• Microsoft Alias: adegeo

[iBolski]

Your best bet is to manually install the SDK. YOu can either download the tarball yourself and extract it to a folder in your home directory and update your $PATH variable to point to that folder, or you can use the automated install shell script to specify which version you want and where to install it.

dotnet-install.sh --channel 3.1 --install-dir ~/dotnet3.1

Will download, untar and install the 3.1 Core SDK into a folder called "dotnet3.1" in your home folder. Then you can modify your .bashrc script at the bottom like this:

export DOTNET_HOME=/home/{your user id}/dotnet3.1
export PATH=$PATH:$DOTNET_HOME

If you did this in a terminal session, close it out and launch terminal again and then do this at the bash command prompt:

dotnet --version

You should see the version you installed. For me it was 3.1.201.

I skipped the package manager because it will remove the previous version. So if you want multiple versions of the SDK installed, the best way is to manually download the specific versions you want from the web page and install them manualy, or use the "dotnet-install.sh" script. You can get the script at:

https://dotnet.microsoft.com/download/dotnet-core/scripts

[byroniac]

The way I'm currently doing it on 20.04 is that I installed the snap "sudo snap install dotnet-sdk". Then I would ordinarily do a "sudo snap alias dotnet-sdk.dotnet dotnet" to create a "dotnet" alias for the operating system. However, in my case I am using the snap versions of Visual Studio Code and Insiders, and they do not see dotnet available for some reason. So I did a "sudo ln -sv /snap/dotnet-sdk/current/dotnet /usr/local/bin/dotnet" to make the command available system-wide (however you must manually remove from /usr/local/bin when no longer needed). Finally, I created a ~/.bash_aliases file and with my aliases I put this at the bottom:

if [ -d /snap/dotnet-sdk/current ]; then
export DOTNET_ROOT=/snap/dotnet-sdk/current
export DOTNET_SYSTEM_GLOBALIZATION_INVARIANT=true
export PATH=$PATH:/snap/dotnet-sdk/current
fi

That DOTNET_SYSTEM_GLOBALIZATION_INVARIANT is critical due to the different version of libicu on 20.04, I think.

[svick]

See https://github.com/dotnet/core/issues/4360. The official packages for Ubuntu 20.04 should be released on 12 May. In the meantime, you can try the workarounds mentioned in that issue, if you want.

[Rick-Anderson]

Dup of #18220
Recommend closing both. Perhaps updating doc with this information.
cc @Thraka

[Rick-Anderson]

@v-radelg please review open and closed issues before opening a new issue.

[Thraka]

Duplicate of #17638