Command line to install/upgrade .NET Core - asp.net-core

Question

Are there command line commands to install or upgrade .NET Core?
I checked to see if I had .NET Core was installed on my computer using dotnet --version only to notice that I still had the preview version installed on my computer. I was wondering if I could issue some commands to upgrade it to the latest version.

Answer 1

There is no dotnet command to update .Net Core. Instead, you should use the same approach you used to install it in the first place, which depends on your OS.

Answer 2

Not promoted officially but it looks like there are approved packages on Chocolatey for .NET Core SDK.
https://chocolatey.org/packages/dotnetcore-sdk
Example:
> choco install dotnetcore-sdk
Or:
> choco upgrade dotnetcore-sdk
Update (December 2020): For .NET 5 the chocolatey package has changed since it's not technically branded as .NET Core any longer.
https://chocolatey.org/packages/dotnet-sdk/
Example:
> choco install dotnet-sdk
Or:
> choco upgrade dotnet-sdk

Answer 3

If you have WinGet, then you can use it to install (or update) .NET:
winget install Microsoft.DotNet.SDK.Preview # currently .NET 7
winget install Microsoft.DotNet.SDK.6
winget install Microsoft.DotNet.SDK.5
winget install Microsoft.DotNet.SDK.3_1
Run from an admin prompt

Answer 4

For those who find this on search, there are dotnet-install scripts you can use. For example:
# Windows PowerShell
Invoke-WebRequest -Uri https://dot.net/v1/dotnet-install.ps1 -OutFile "$env:temp/dotnet-install.ps1"; powershell -executionpolicy bypass "$env:temp/dotnet-install.ps1"
# PowerShell Core
Invoke-WebRequest -Uri https://dot.net/v1/dotnet-install.ps1 -OutFile "$env:temp/dotnet-install.ps1"; pwsh "$env:temp/dotnet-install.ps1"
# Shell
wget https://dot.net/v1/dotnet-install.sh && chmod +x ./dotnet-install.sh && sudo ./dotnet-install.sh
* Note the default install location for these is different than the official installers; as said in another answer the easiest path to update is to use the same method you first installed with.
Edit: apt packages for Ubuntu 22.04+ now includes dotnet6 for the SDK. Other dotnet packages, such as just the runtime (dotnet-runtime-6.0, aspnet-runtime-6.0) can be installed as well.
sudo apt update
sudo apt install dotnet6

Answer 5

Just a heads up so you (or other people) don't struggle for hours as I did.
.NET Core 1.1.0 ships with SDK 1.0.0 Preview 2 (when this is written), but you need SDK 1.0.0 Preview 3.
Download and install .NET Core 1.1.0 as #svick suggested, then download and install SDK Preview 3 from: https://github.com/dotnet/core/blob/master/release-notes/preview3-download.md