Run:

source ~/.profile 

再试一次

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

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

Run:

source ~/.profile 

再试一次

也有此问题(windows)，修复是完全关闭所有终端实例，然后重试。

我在Ubuntu 17.04上也遇到了同样的问题。

这个解决方案对我很有效:

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

then

yarn install

结果:

yarn install v1.3.2
warning You are using Node "6.0.0" which is not supported and may encounter bugs or unexpected behaviour. Yarn supports the following server range: "^4.8.0 || ^5.7.0 || ^6.2.2 || >=8.0.0"
info No lockfile found.
[1/4] Resolving packages...
[2/4] Fetching packages...
[3/4] Linking dependencies...
[4/4] Building fresh packages...

info Lockfile not saved, no dependencies.
Done in 0.20s.