sudo npm install -g yarnpkg
npm WARN deprecated yarnpkg@0.15.1: Please use the `yarn` package instead of `yarnpkg`

这对我来说是可行的

sudo npm install -g yarn

我在Ubuntu 18.04上也遇到了同样的问题。这对我来说很管用:

我去掉了cmdtest和纱线

sudo apt remove cmdtest

sudo apt remove yarn

使用npm全局安装yarn

sudo npm install -g yarn

我在ubuntu操作系统上也有同样的问题，我用sudo yarn install而不是yarn install解决了这个问题

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.

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。

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