How To Install and uninstall reinstall .net 7.x on Ubuntu 20.04（vultr）

qq

Install .net 7.x

os：Ubuntu 20.04.4 LTS

# lsb_release -a

No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 20.04.4 LTS
Release:	20.04
Codename:	focal

Scripted install

quick start

 wget https://dot.net/v1/dotnet-install.sh
sudo chmod +x ./dotnet-install.sh
./dotnet-install.sh --channel 7.0

output

dotnet-install: Attempting to download using aka.ms link https://dotnetcli.azureedge.net/dotnet/Sdk/7.0.102/dotnet-sdk-7.0.102-linux-x64.tar.gz

source:https://learn.microsoft.com/en-us/dotnet/core/install/linux-scripted-manual#scripted-install

printf 'deb [arch=amd64 signed-by=/usr/share/keyrings/microsoft.gpg] https://packages.microsoft.com/ubuntu/22.04/prod jammy main\n' | sudo tee /etc/apt/sources.list.d/microsoft.list >/dev/null

Step 2: Install .NET SDK/Runtime & ASP.NET

Use apt-get to install .NET SDK/Runtime & ASP.NET runtime.  Follow the installation instructions for Ubuntu as follow:

sudo apt install dotnet-sdk-7.0 dotnet-runtime-7.0 aspnetcore-runtime-7.0

output

Get:1 https://packages.microsoft.com/ubuntu/20.04/prod focal/main amd64 dotnet-runtime-deps-7.0 amd64 7.0.0-1 [2,892 B]
Get:2 https://packages.microsoft.com/ubuntu/20.04/prod focal/main amd64 dotnet-host amd64 7.0.0-1 [57.3 kB]
Get:3 https://packages.microsoft.com/ubuntu/20.04/prod focal/main amd64 dotnet-hostfxr-7.0 amd64 7.0.0-1 [144 kB]                
Fetched 252 kB in 0s (531 kB/s)                                                                  
Reading package lists... Done
...

# dotnet --info

output

.NET SDK:
 Version:   7.0.100
 Commit:    e12b7af219

Runtime Environment:
 OS Name:     ubuntu
 OS Version:  20.04
 OS Platform: Linux
 RID:         ubuntu.20.04-x64
 Base Path:   /usr/share/dotnet/sdk/7.0.100/

Host:
  Version:      7.0.0
  Architecture: x64
  Commit:       d099f075e4

.NET SDKs installed:
  6.0.202 [/usr/share/dotnet/sdk]
  7.0.100 [/usr/share/dotnet/sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 6.0.4 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 7.0.0 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 6.0.4 [/usr/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 7.0.0 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

update SDK

sudo apt install dotnet-sdk-7.0 dotnet-runtime-7.0 aspnetcore-runtime-7.0

output

dotnet --info
.NET SDKs installed:
  6.0.403 [/usr/share/dotnet/sdk]
  7.0.202 [/usr/share/dotnet/sdk]
.NET runtimes installed:
  Microsoft.AspNetCore.App 6.0.11 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 7.0.4 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]

Uninstall/Remove  .NET on Ubuntu 20.04（vultr）

step 1：

sudo apt remove dotnet-sdk-7.0 dotnet-runtime-7.0 aspnetcore-runtime-7.0 # remove the software packages.

or

How to Install .NET6 or 7 in Ubuntu 22.04 | 20.04, Debian 11/10 & Other Linux

https://fostips.com/ubuntu-22-04-net-6-how-to-install-other-linux/