Install .NET 8 on Raspberry pi

Install .NET via the following script:

• https://learn.microsoft.com/en-us/dotnet/core/tools/dotnet-install-script

1. Perform dry run and review envvar DOTNET_INSTALL_DIR

I advise to first do a dry run and to enable verbose mode to review if envvar DOTNET_INSTALL_DIR is set correctly:

curl -sSL https://dot.net/v1/dotnet-install.sh | bash /dev/stdin --version latest --verbose --dry-run

Note: Preview must include the full preview release label like 8.0.100-rc.1.23463.5

2. Set DOTNET_INSTALL_DIR if needed

Inspect the output and validate the install path. You can override this as listed in the script its help:

export DOTNET_INSTALL_DIR=/opt/dotnet

I already had older SDK's installed in /opt/dotnet but the script will not add new SDK's to that path automatically although the DOTNET_ROOT envvar already points to this path.

3. Perform actual install

Run the script but now without --dry-run:

Latest

curl -sSL https://dot.net/v1/dotnet-install.sh | bash /dev/stdin --version latest --verbose

4. Review installed SDK's

Review the SDK's after installation:

dotnet --list-sdks

5. Ensure dotnet tool is Supported on $PATH

If you login or ssh into your Raspberry PI with a different profile the dotnet CLI may not work, and out of the box the above steps didn't allow me to install and run dotnet tools such as pbm on the terminal.

An easy fix for this is to append the following to your .bashrc profile:

echo 'export DOTNET_ROOT=$HOME/.dotnet' >> ~/.bashrc
echo 'export PATH=$PATH:$HOME/.dotnet:$HOME/.dotnet/tools' >> ~/.bashrc

5. Remove old SDK's

You can easily remove SDK's by removing the corresponding folders:

sudo -s
cd DOTNET_INSTALL_DIR
rm -r sdk/$version
rm -r shared/Microsoft.NETCore.App/$version
rm -r shared/Microsoft.AspNetCore.All/$version
rm -r shared/Microsoft.AspNetCore.App/$version
rm -r host/fxr/$version