下面的步骤对Pop!_OS 20.10 & ubuntu 20.04

Sudo应该删除cmdtest 须藤易脱纱 curl - ss https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add - 回显"deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list Sudo apt-get update Sudo apt-get install yarn -y 线安装

也有此问题(windows)，修复是完全关闭所有终端实例，然后重试。

在你的终端上复制并粘贴这段代码 这对我来说非常有效。

sudo apt remove cmdtest
sudo apt remove yarn
curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -
echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list
sudo apt-get update
sudo apt-get install yarn -y

我的解决方案是

curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | sudo apt-key add -

echo "deb https://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list

sudo apt-get update && sudo apt-get install yarn

如果您的节点版本高于16.10。您可以简单地运行以下命令来使用yarn命令。

corepack启用

如果您的节点版本为16.10之前。执行上述命令前请先执行npm i -g corepack。

所有正确建议删除Ubuntu yarn包并通过NPM安装yarn的答案都值得称赞，下面是一个详细的答案和解释(注意，还有意见):

从yarn安装中出现No such file or directory错误的原因是您没有使用“正确的”yarn:当您使用Ubuntu软件源安装yarn时，您得到的软件是来自cmdtest黑盒测试套件的“yarn”场景测试工具。这可能不是你的意思，因为Yarn也是Javascript应用程序的流行开发生命周期工具(类似于Make、Maven等)。

Javascript Yarn工具在Ubuntu软件源中是不可用的，但是可以通过NPM安装(NPM是Yarn想要取代的另一个开发生命周期工具——所以这很尴尬…)

要让Yarn在Ubuntu中可用，首先要删除cmdtest及其工具:

$ sudo apt purge cmdtest

然后确保NPM已经安装:

$ sudo apt install npm

然后使用NPM安装Yarn:

$ npm install -g yarn

Note: using npm install -g will install a Javascript package for your current user account, which should be fine for most purposes. If you want to install Yarn for all users, you can use sudo for the NPM command, but that is not recommended: NPM packages are rarely audited for security in the context of a multi-user operating system and installing some packages might even break when installing them as "root". NPM used to warn against running it with sudo and the main reason it is not doing so today is that it annoys people that use sandboxed "root-like" environments (such as Docker) for building and deploying Javascript applications for single-user servers.