关于m1芯片的mac同时安装 dotnet的问题

dotnet从.net6版本开始支持 m1芯片的mac 也就是能下载 arm的sdk和runtime，但是有苹果的转译中间层使得 .net core2.1、.net core 3.1和.net 5也能使用。但是有个非常重要的一点，他们不能同时安装，也就是说，如果你要使用.net5那就不能安装net6，如果同时安装了.net5和.net6这会导致 .net5的sdk失效。同理安装了 .net core2.1 就不能安装.net core3.1

.net6及以上可以同时安装
.net core3.1、.net 5 可以同时安装
.net core2.0、net core2.1可以同时安装

#!/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

卸载所有dotnet参考

安装.net5 参考