安装了 .NET Core 之后，由于迭代更新的原因，SDK 的版本会越安越多，这里就涉及删除 .NET Core 了。

使用以下脚本，会彻底卸载全部的 .NET Core SDK。

打开 VS Code 之类的文本编辑器，将以下脚本复制进去

#!/usr/bin/env bash
#
# Copyright (c) .NET Foundation and contributors. All rights reserved.
# Licensed under the MIT license. See LICENSE file in the project root for full license information.
#

DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

current_user=$(whoami)
if [ $current_user != "root" ]; then
    echo "$(basename "$0") uninstallation script requires superuser privileges to run"
    exit 1
fi

# this is the common suffix for all the dotnet pkgs
dotnet_pkg_name_suffix="com.microsoft.dotnet"
dotnet_install_root="/usr/local/share/dotnet"
dotnet_path_file="/etc/paths.d/dotnet"

remove_dotnet_pkgs(){
    installed_pkgs=($(pkgutil --pkgs | grep $dotnet_pkg_name_suffix))
    
    for i in "${installed_pkgs[@]}"
    do
        echo "Removing dotnet component - \"$i\""
        pkgutil --force --forget "$i"
    done
}

remove_dotnet_pkgs
[ "$?" -ne 0 ] && echo "Failed to remove dotnet packages." && exit 1

echo "Deleting install root - $dotnet_install_root"
rm -r "$dotnet_install_root"
rm "$dotnet_path_file"

echo "dotnet packages removal succeeded."
exit 0

将上面的文件，保存为 delDotnet.sh 文件。

打开终端，将上面的 delDotnet.sh 文件拖进终端，然后回车执行。

可能碰到的错误：

// 错误一：Permission denied
// 执行该语句
chmod 777 delDotnet.sh

// 错误二：delDotnet.sh uninstallation script requires superuser privileges to run
// 执行该语句
sudo delDotnet.sh